Hot pepper(Capsicum annuum L.)is consumed as one of the oldest domesticated crops all over the world.Although mutation breeding using radiation has been performed in hot peppers,little is known about the comparative a...Hot pepper(Capsicum annuum L.)is consumed as one of the oldest domesticated crops all over the world.Although mutation breeding using radiation has been performed in hot peppers,little is known about the comparative analysis of mutagenic effects at the molecular level by ion beam irradiation.To comprehend the response mechanism of hot pepper to the ion beam,we used a mutant with favorable economic characteristics induced by lithium-ion beam irradiation to investigate the biological effects.The results indicated that the lithium-ion beam had a positive effect on important agronomic traits,particularly yield unit,but had a negligible effect on the photosynthetic rate of hot pepper,with a specific influence on chlorophyll b rather than chlorophyll a.By RNA-Seq analysis,671 up-regulated and 376 down-regulated genes were identified as differentially expressed genes(DEGs)between irradiated and unirradiated hot pepper.Based on GO and KEGG network analysis,the auxin metabolic process was the common pathway in these two networks.A total of 118 potential reactive oxygen species(ROS)scavenging genes and 262 signal transduction genes were identified,suggesting a balance between antioxidant enzymes and enhanced ROS transduction.The amounts of 15 metabolite,involved in GABA pathways,secondary metabolism,carbohydrate metabolism,shikimate pathways,TCA cycles,nitrogen metabolism,glycerol metabolism and acetate pathways,were significantly changed in the ion beam irradiated sample.These results highlighted that the enriched pathways could play important roles in response to ion beam irradiation in hot pepper plants.In summary,these data provide valuable information for future research on ion beam irradiation and genomic studies in hot pepper.展开更多
Fruit set and development are affected by many phytohormones, including gibberellin. Little is known regarding molecular mechanism underlying gibberellin mediated fruit set and development especially in Capsicum. Thre...Fruit set and development are affected by many phytohormones, including gibberellin. Little is known regarding molecular mechanism underlying gibberellin mediated fruit set and development especially in Capsicum. Three gibberellin recep- tors, CaGIDlb.1, CaGIDlb.2 and CaGIDlc, and a DELLA protein, CaGAI, have been identified in Capsicum annuum L. During the fruit development, the expression level of CaGIDlc was low, and the expression fold change is mild. However, CaGIDlb. 1 and CaGIDlb.2 were relatively higher and more acute, which indicates that CaGIDlb. 1 and CaGID1b.2 may play an important role in fruit pericarp, placenta and seed. Ectopic expressions of CaGIDlb. 1, CaGIDlb.2 and CaGIDlc in Arabidopsis double mutant gidla gidlc increased plant height, among which CaGIDlb.2 had the most significant effect; CaGAI reduced plant height in double mutant rga-24/gai-t6, having a similar function to AtGID1 and AtGAI in stem elon- gation. Yeast two-hybrid （Y2H） and bimolecular fluorescence complementation （BiFC） assays indicated that CaGIDlb.1 and CaGID1 b.2 interact with CaGAI in a GA-dependent manner, while CaGIDlc interacts with CaGAI in a GA-independent manner. Our study reveals the key elements during gibberellin signaling in Capsicum and supports the critical importance of gibberellin for Capsicum fruit set and development.展开更多
In perspective of breeding high-yield hybrid pepper varieties, combining ability analysis of net photosynthesis rate at different phases of flowering and fruit setting in pepper was made with 15 cross combinations fro...In perspective of breeding high-yield hybrid pepper varieties, combining ability analysis of net photosynthesis rate at different phases of flowering and fruit setting in pepper was made with 15 cross combinations from 6 parents by （1/2） n （n- 1） diallel crosses. There are relatively large differences not only in general combining ability （GCA） effect among different parents and at different phases of flowering and fruit setting, but also in specific combining ability （SCA） effect among different hybrids. There are relatively large GCA effects in late parents but relatively less GCA effects in early parents. No obvious laws have been found in the relationship between SCA effects and maturity of hybrids. Variances of SCA are larger than those of GCA. Heritability is less but influence of environment is larger. Correlation analysis of combining ability between net photosynthesis rate and agronomic character or resistances to main diseases has showed that correlation coefficients of GCA are relatively large at the medium phase and the late phase of flowering and fruit setting. Net photosynthesis rate is more relative to leaf characters and fruit characters. Correlation coefficients of SCA are relatively large at the early phase and the late phase of flowering and fruit setting. Net photosynthesis rate is more relative to leaf characters and plant characters at the early phase but to plant characters and fruit characters at the late phase. Correlation coefficients of SCA between net photosynthesis rate and resistances to main diseases are larger than those of GCA. The combining abilities of net photosynthesis rate at different phases of flowering and fruit setting are positively correlated with those of yield per plant. The combining ability is an important parameter of breeding of high photosynthesis hybrid pepper varieties.展开更多
Effects of continuous negative pressure water supply on water consumption, growth and development, as well as physiological mechanism and quality of Capsicum annuum L. were investigated in this paper. Meanwhile, the o...Effects of continuous negative pressure water supply on water consumption, growth and development, as well as physiological mechanism and quality of Capsicum annuum L. were investigated in this paper. Meanwhile, the optimal negative pressure water supply conditions for growth of C. annuum L. were screened out to achieve the goals of water conservation, high yield and high quality, thus providing theoretical foundation for its field production. The pot experiment within the greenhouse was utilized; the continuous negative pressure water supply was adopted; the four treatments, artificial watering（CK）, –5 k Pa（T1）, –10 k Pa（T2）, and –15 k Pa（T3） were set; and the daily water consumption, yield, as well as the biomass, nitrate reductase, root activity, vitamin C, capsaicin, and nutrient uptakes of nitrogen（N）, phosphorus（P） and potassium（K） during various stages of its growth were determined. Compared with CK, when the water supply pressure was controlled at –5 to –15 k Pa in the experiment, the total water consumption of C. annuum L. reduced by 53.42 to 67.75%, the total water consumption intensity reduced by 54.29 to 67.14%, and the water use efficiency increased by 12.66 to 124.67%. The N accumulation in a single strain of C. annuum L. from the color turning stage to the red ripe stage increased by 15.99 to 100.55%, respectively, compared with that of CK; the P accumulation increased by 20.47 to 154.00% relative to that of CK, and the K accumulation increased by 64.92 to 144.9% compared with that of CK. Compared with CK, C. annuum L. yield was remarkably improved by 13.79% at T1, and contents of vitamin C, capsaicin as well as carotenoids at all growth stages were enhanced by 13.42–147.01%, 11.54–71.01%, and 41.1–568.06%, respectively. Nitrate reductase activity, root activity and chlorophyll（a＋b） were markedly increased by 335.78–500%, 79.6–140.68% and 114.95–676.19%, respectively, from immature stage to full ripe stage. Adopting the continuous negative pressure water supply for C. annuum L. has a significant water-saving effect, and the water supply pressure being stable at –5 k Pa contributes to its growth and development, improves yield, enhances root activity, promotes nutrient uptake, and improves its quality, thus achieving the effects of water conservation, high yield, high quality and high efficiency.展开更多
Cytoplasmic male sterility (CMS) is a maternally inherited trait characterized by the inability of a plant to produce functional pollen, which is widespread among higher plants. CMS system is a valuable tool for plant
Capsicum annuum L. was initially domesticated in Mexico and northern Central America, and represented an ancient Neotropical plant food complex. The purpose of this paper is to report the isolation and purification of...Capsicum annuum L. was initially domesticated in Mexico and northern Central America, and represented an ancient Neotropical plant food complex. The purpose of this paper is to report the isolation and purification of a novo-member of a protease inhibitor from jalapeño pepper (Capsicum annuum L.) (PIJP). The molecular weight of PIJP inhibitor is 5.95 kDa with 56 amino acids and 6 Cys residues with high inhibitory activity to trypsin with a Ki value of 95 nM. This inhibitor according to the alignment with homologous from NCBI and Pfam databases is a member of proteinase inhibitors II. It is worthwhile to mention a major compositional difference between the proteinase inhibitor II families which have 8 Cys residues. PIJP is the first purified proteinase inhibitor, member of this family with only 6 Cys residues.展开更多
The cultivation of goat chili has potentially increased in Chile, due to different varieties of gourmet products made with it;for this reason, new industrial projects are sought to the growing volume to adapt them to ...The cultivation of goat chili has potentially increased in Chile, due to different varieties of gourmet products made with it;for this reason, new industrial projects are sought to the growing volume to adapt them to the new trends in consumption habits, mainly focused on achieving an attractive meal, a fast preparation and consumption, while nutrients are provided to offer some benefits for human health. The “snacks” products that include the use of fruit satisfactorily respond to these requirements, in addition to providing marketing alternatives to the surplus of fruit exports. For this reason, the present test, consisting of the processing of snacks based on goat chub chili with the addition of tomato and marjoram, was carried out to increase the palatability and the sensorial quality of the final product. The following formulations were used: only chili (T1);chili and tomato (T2);chili, tomato and marjoram (T3). The latter one was characterized by a good flavor and aroma. A large amount of the fruit water content had been removed by drying it with forced hot air. A product without chemical preserves was obtained, with physical and chemical parameters similar to those required by similar foods existing on the market today. In sensorial terms, the formulation to which marjoram was added showed good sensorial and acceptability attributes, highlighting them from the rest of the treatments. The snack color was maintained after the dehydration process, according to panelists.展开更多
Root-knot nematodes(RKNs)cause severe diseases in peppers annually around the world.In pepper,the Me3 gene provides a heat-stable and broad-spectrum resistance to RKNs.In this study,several simple sequence repeat(SSR)...Root-knot nematodes(RKNs)cause severe diseases in peppers annually around the world.In pepper,the Me3 gene provides a heat-stable and broad-spectrum resistance to RKNs.In this study,several simple sequence repeat(SSR)markers and insertion/deletion(In Del)markers were developed to fine map the Me3 gene.Analysis of 2272 individuals(F2progenies)revealed that Me3 was located in a 45-kb DNA region between markers SSR784 and SSR339,in which there were three candidate genes.Among them,as a novel nucleotide binding site and leucine rich repeat(NBS-LRR)family gene,the DNA sequence of Capana09g000163 of pepper line‘HDA149’was 6348 bp in length,with a 2802-bp open reading frame encoding 933 amino acids,including NB-ARC and LRR domains.Tobacco transient expression assays demonstrated that expression of Capana09g000163 triggered a hypersensitive response(HR)in Nicotiana benthamiana leaves.Subcellular localization results showed that the Capana09g000163 protein was localized in the cell nucleus.Ectopic expression of Capana09g000163 in Arabidopsis significantly increased resistance against Meloidogyne incognita compared with the wild-type(WT)Arabidopsis.Furthermore,M.incognita was almost unable to develop in transgenic Arabidopsis expressing Capana09g000163.Taken together,we cloned the Me3 gene and verified that it induced resistance against M.incognita with the methods of map-based cloning and transgenic technology,which may be of great significance to pepper breeding for resistance against RKNs.展开更多
为了挖掘能够应用于遗传改良的种质资源,并筛选出优良表现的核心种质资源,为辣椒品种改良创新提供理论依据,以275份辣椒为研究材料,对42个表型性状进行遗传多样性分析、相关性分析、主成分分析以及聚类分析。结果表明:15个数量性状的Sha...为了挖掘能够应用于遗传改良的种质资源,并筛选出优良表现的核心种质资源,为辣椒品种改良创新提供理论依据,以275份辣椒为研究材料,对42个表型性状进行遗传多样性分析、相关性分析、主成分分析以及聚类分析。结果表明:15个数量性状的Shannon-Wiener多样性指数(H')的变化范围为1.90~2.26,其中叶片长的H'值最高为2.26,其变异系数(coefficient of variation,CV)的变化范围为22.38%~146.09%。以辣椒素含量的变异系数最高为146.09%,变异幅度为48~290231SHU。27个质量性状的Shannon-Wiener多样性指数(H')的变化范围为0.03~2.81,其中果形有13种分布类型,其频率分布范围为1.87%~31.84%,大多数为灯笼形与羊角形,其遗传多样性指数也是最高为2.81,表明275份辣椒种质的表型性状具有丰富的遗传多样性。相关性分析结果表明,各表型性状间的相关系数中达到显著或极显著的有189对性状,这表明许多表型性状间相互影响。主成分分析结果表明,前13个主成分累加贡献率为68.62%,代表了辣椒表型性状的主要信息量,说明这13个主成分可反映42个表型性状的基本特征,从特征值和贡献率来看,果横径、单果重、果形、果肩形状、胎座大小,叶片长、叶片宽、叶柄长、株幅、分枝性、茎茸毛、叶面茸毛、花冠色、花药颜色、花柱颜色和果色共17个表型性状是引起辣椒种质表型不同的主要因素。聚类分析结果表明,在遗传距离为40.0时,275份辣椒种质可聚为5个类群。该研究为辣椒种质资源的利用、创新及品种选育提供了重要参考。展开更多
基金supported by the China Atomic Energy Authority(Crop Varietal Improvement and Insect Pests Control by Nuclear Radiation)Key Technological Innovation Key Project of Agricultural Science and Technology Breakthrough in Heilongjiang Province-Breakthrough Variety Breeding and Industrial Application of Vegetables。
文摘Hot pepper(Capsicum annuum L.)is consumed as one of the oldest domesticated crops all over the world.Although mutation breeding using radiation has been performed in hot peppers,little is known about the comparative analysis of mutagenic effects at the molecular level by ion beam irradiation.To comprehend the response mechanism of hot pepper to the ion beam,we used a mutant with favorable economic characteristics induced by lithium-ion beam irradiation to investigate the biological effects.The results indicated that the lithium-ion beam had a positive effect on important agronomic traits,particularly yield unit,but had a negligible effect on the photosynthetic rate of hot pepper,with a specific influence on chlorophyll b rather than chlorophyll a.By RNA-Seq analysis,671 up-regulated and 376 down-regulated genes were identified as differentially expressed genes(DEGs)between irradiated and unirradiated hot pepper.Based on GO and KEGG network analysis,the auxin metabolic process was the common pathway in these two networks.A total of 118 potential reactive oxygen species(ROS)scavenging genes and 262 signal transduction genes were identified,suggesting a balance between antioxidant enzymes and enhanced ROS transduction.The amounts of 15 metabolite,involved in GABA pathways,secondary metabolism,carbohydrate metabolism,shikimate pathways,TCA cycles,nitrogen metabolism,glycerol metabolism and acetate pathways,were significantly changed in the ion beam irradiated sample.These results highlighted that the enriched pathways could play important roles in response to ion beam irradiation in hot pepper plants.In summary,these data provide valuable information for future research on ion beam irradiation and genomic studies in hot pepper.
基金supported by the National Key Technology R&D Program of China (2011BAZ01732)Project of Ministry of Agriculture of China (CARS-25)+1 种基金the National High-Tech R&D Program of China (863 Program, 2012AA100103002)Core Research Budget of the Non-profit Governmental Research Institute, China (ICS, CAAS, 1610032011011)
文摘Fruit set and development are affected by many phytohormones, including gibberellin. Little is known regarding molecular mechanism underlying gibberellin mediated fruit set and development especially in Capsicum. Three gibberellin recep- tors, CaGIDlb.1, CaGIDlb.2 and CaGIDlc, and a DELLA protein, CaGAI, have been identified in Capsicum annuum L. During the fruit development, the expression level of CaGIDlc was low, and the expression fold change is mild. However, CaGIDlb. 1 and CaGIDlb.2 were relatively higher and more acute, which indicates that CaGIDlb. 1 and CaGID1b.2 may play an important role in fruit pericarp, placenta and seed. Ectopic expressions of CaGIDlb. 1, CaGIDlb.2 and CaGIDlc in Arabidopsis double mutant gidla gidlc increased plant height, among which CaGIDlb.2 had the most significant effect; CaGAI reduced plant height in double mutant rga-24/gai-t6, having a similar function to AtGID1 and AtGAI in stem elon- gation. Yeast two-hybrid （Y2H） and bimolecular fluorescence complementation （BiFC） assays indicated that CaGIDlb.1 and CaGID1 b.2 interact with CaGAI in a GA-dependent manner, while CaGIDlc interacts with CaGAI in a GA-independent manner. Our study reveals the key elements during gibberellin signaling in Capsicum and supports the critical importance of gibberellin for Capsicum fruit set and development.
文摘In perspective of breeding high-yield hybrid pepper varieties, combining ability analysis of net photosynthesis rate at different phases of flowering and fruit setting in pepper was made with 15 cross combinations from 6 parents by （1/2） n （n- 1） diallel crosses. There are relatively large differences not only in general combining ability （GCA） effect among different parents and at different phases of flowering and fruit setting, but also in specific combining ability （SCA） effect among different hybrids. There are relatively large GCA effects in late parents but relatively less GCA effects in early parents. No obvious laws have been found in the relationship between SCA effects and maturity of hybrids. Variances of SCA are larger than those of GCA. Heritability is less but influence of environment is larger. Correlation analysis of combining ability between net photosynthesis rate and agronomic character or resistances to main diseases has showed that correlation coefficients of GCA are relatively large at the medium phase and the late phase of flowering and fruit setting. Net photosynthesis rate is more relative to leaf characters and fruit characters. Correlation coefficients of SCA are relatively large at the early phase and the late phase of flowering and fruit setting. Net photosynthesis rate is more relative to leaf characters and plant characters at the early phase but to plant characters and fruit characters at the late phase. Correlation coefficients of SCA between net photosynthesis rate and resistances to main diseases are larger than those of GCA. The combining abilities of net photosynthesis rate at different phases of flowering and fruit setting are positively correlated with those of yield per plant. The combining ability is an important parameter of breeding of high photosynthesis hybrid pepper varieties.
基金supported by the National High-Technology Research and Development Program of China (863 Program, 2013AA102900-3)
文摘Effects of continuous negative pressure water supply on water consumption, growth and development, as well as physiological mechanism and quality of Capsicum annuum L. were investigated in this paper. Meanwhile, the optimal negative pressure water supply conditions for growth of C. annuum L. were screened out to achieve the goals of water conservation, high yield and high quality, thus providing theoretical foundation for its field production. The pot experiment within the greenhouse was utilized; the continuous negative pressure water supply was adopted; the four treatments, artificial watering（CK）, –5 k Pa（T1）, –10 k Pa（T2）, and –15 k Pa（T3） were set; and the daily water consumption, yield, as well as the biomass, nitrate reductase, root activity, vitamin C, capsaicin, and nutrient uptakes of nitrogen（N）, phosphorus（P） and potassium（K） during various stages of its growth were determined. Compared with CK, when the water supply pressure was controlled at –5 to –15 k Pa in the experiment, the total water consumption of C. annuum L. reduced by 53.42 to 67.75%, the total water consumption intensity reduced by 54.29 to 67.14%, and the water use efficiency increased by 12.66 to 124.67%. The N accumulation in a single strain of C. annuum L. from the color turning stage to the red ripe stage increased by 15.99 to 100.55%, respectively, compared with that of CK; the P accumulation increased by 20.47 to 154.00% relative to that of CK, and the K accumulation increased by 64.92 to 144.9% compared with that of CK. Compared with CK, C. annuum L. yield was remarkably improved by 13.79% at T1, and contents of vitamin C, capsaicin as well as carotenoids at all growth stages were enhanced by 13.42–147.01%, 11.54–71.01%, and 41.1–568.06%, respectively. Nitrate reductase activity, root activity and chlorophyll（a＋b） were markedly increased by 335.78–500%, 79.6–140.68% and 114.95–676.19%, respectively, from immature stage to full ripe stage. Adopting the continuous negative pressure water supply for C. annuum L. has a significant water-saving effect, and the water supply pressure being stable at –5 k Pa contributes to its growth and development, improves yield, enhances root activity, promotes nutrient uptake, and improves its quality, thus achieving the effects of water conservation, high yield, high quality and high efficiency.
基金the National Natural Science Foundation of China （30370978）.
文摘Cytoplasmic male sterility (CMS) is a maternally inherited trait characterized by the inability of a plant to produce functional pollen, which is widespread among higher plants. CMS system is a valuable tool for plant
基金DGAPA-UNAM,Project PAPIIT IN200711J.P.Carrillo Montes thanks CONACyT for his fellowship(206846).
文摘Capsicum annuum L. was initially domesticated in Mexico and northern Central America, and represented an ancient Neotropical plant food complex. The purpose of this paper is to report the isolation and purification of a novo-member of a protease inhibitor from jalapeño pepper (Capsicum annuum L.) (PIJP). The molecular weight of PIJP inhibitor is 5.95 kDa with 56 amino acids and 6 Cys residues with high inhibitory activity to trypsin with a Ki value of 95 nM. This inhibitor according to the alignment with homologous from NCBI and Pfam databases is a member of proteinase inhibitors II. It is worthwhile to mention a major compositional difference between the proteinase inhibitor II families which have 8 Cys residues. PIJP is the first purified proteinase inhibitor, member of this family with only 6 Cys residues.
文摘The cultivation of goat chili has potentially increased in Chile, due to different varieties of gourmet products made with it;for this reason, new industrial projects are sought to the growing volume to adapt them to the new trends in consumption habits, mainly focused on achieving an attractive meal, a fast preparation and consumption, while nutrients are provided to offer some benefits for human health. The “snacks” products that include the use of fruit satisfactorily respond to these requirements, in addition to providing marketing alternatives to the surplus of fruit exports. For this reason, the present test, consisting of the processing of snacks based on goat chub chili with the addition of tomato and marjoram, was carried out to increase the palatability and the sensorial quality of the final product. The following formulations were used: only chili (T1);chili and tomato (T2);chili, tomato and marjoram (T3). The latter one was characterized by a good flavor and aroma. A large amount of the fruit water content had been removed by drying it with forced hot air. A product without chemical preserves was obtained, with physical and chemical parameters similar to those required by similar foods existing on the market today. In sensorial terms, the formulation to which marjoram was added showed good sensorial and acceptability attributes, highlighting them from the rest of the treatments. The snack color was maintained after the dehydration process, according to panelists.
基金supported by the National Natural Science Foundation of China(Grant Nos.31672010,31871942 and 32172366)Hainan Yazhou Bay Seed Lab(Grant No.B21HJ0214)China Agriculture Research System(Grant No.CARS-25)。
文摘Root-knot nematodes(RKNs)cause severe diseases in peppers annually around the world.In pepper,the Me3 gene provides a heat-stable and broad-spectrum resistance to RKNs.In this study,several simple sequence repeat(SSR)markers and insertion/deletion(In Del)markers were developed to fine map the Me3 gene.Analysis of 2272 individuals(F2progenies)revealed that Me3 was located in a 45-kb DNA region between markers SSR784 and SSR339,in which there were three candidate genes.Among them,as a novel nucleotide binding site and leucine rich repeat(NBS-LRR)family gene,the DNA sequence of Capana09g000163 of pepper line‘HDA149’was 6348 bp in length,with a 2802-bp open reading frame encoding 933 amino acids,including NB-ARC and LRR domains.Tobacco transient expression assays demonstrated that expression of Capana09g000163 triggered a hypersensitive response(HR)in Nicotiana benthamiana leaves.Subcellular localization results showed that the Capana09g000163 protein was localized in the cell nucleus.Ectopic expression of Capana09g000163 in Arabidopsis significantly increased resistance against Meloidogyne incognita compared with the wild-type(WT)Arabidopsis.Furthermore,M.incognita was almost unable to develop in transgenic Arabidopsis expressing Capana09g000163.Taken together,we cloned the Me3 gene and verified that it induced resistance against M.incognita with the methods of map-based cloning and transgenic technology,which may be of great significance to pepper breeding for resistance against RKNs.
文摘为了挖掘能够应用于遗传改良的种质资源,并筛选出优良表现的核心种质资源,为辣椒品种改良创新提供理论依据,以275份辣椒为研究材料,对42个表型性状进行遗传多样性分析、相关性分析、主成分分析以及聚类分析。结果表明:15个数量性状的Shannon-Wiener多样性指数(H')的变化范围为1.90~2.26,其中叶片长的H'值最高为2.26,其变异系数(coefficient of variation,CV)的变化范围为22.38%~146.09%。以辣椒素含量的变异系数最高为146.09%,变异幅度为48~290231SHU。27个质量性状的Shannon-Wiener多样性指数(H')的变化范围为0.03~2.81,其中果形有13种分布类型,其频率分布范围为1.87%~31.84%,大多数为灯笼形与羊角形,其遗传多样性指数也是最高为2.81,表明275份辣椒种质的表型性状具有丰富的遗传多样性。相关性分析结果表明,各表型性状间的相关系数中达到显著或极显著的有189对性状,这表明许多表型性状间相互影响。主成分分析结果表明,前13个主成分累加贡献率为68.62%,代表了辣椒表型性状的主要信息量,说明这13个主成分可反映42个表型性状的基本特征,从特征值和贡献率来看,果横径、单果重、果形、果肩形状、胎座大小,叶片长、叶片宽、叶柄长、株幅、分枝性、茎茸毛、叶面茸毛、花冠色、花药颜色、花柱颜色和果色共17个表型性状是引起辣椒种质表型不同的主要因素。聚类分析结果表明,在遗传距离为40.0时,275份辣椒种质可聚为5个类群。该研究为辣椒种质资源的利用、创新及品种选育提供了重要参考。
