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‘金草鱼’和普通草鱼肌肉营养成分比较分析及其营养价值评价 被引量:4
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作者 王广军 吴敬荣 +6 位作者 于凌云 郁二蒙 谢骏 李志斐 陈鹏飞 余德光 张凯 《甘肃农业大学学报》 CAS CSCD 北大核心 2017年第5期121-126,共6页
【目的】比较分析‘金草鱼’与普通草鱼肌肉营养成分的异同,旨在进一步了解‘金草鱼’的开发利用价值.【方法】对‘金草鱼’和普通草鱼肌肉中的主要营养成份、氨基酸、脂肪酸以及矿物元素含量进行了比较分析,并对其营养价值进行了评价.... 【目的】比较分析‘金草鱼’与普通草鱼肌肉营养成分的异同,旨在进一步了解‘金草鱼’的开发利用价值.【方法】对‘金草鱼’和普通草鱼肌肉中的主要营养成份、氨基酸、脂肪酸以及矿物元素含量进行了比较分析,并对其营养价值进行了评价.【结果】‘金草鱼’脂肪显著高于普通草鱼,水分显著低于普通草鱼,但粗蛋白和灰分差异不显著.‘金草鱼’和普通草鱼肌肉16种氨基酸总量分别为17.99%和17.43%,其中7种必需氨基酸分别占氨基酸总量的41.25%和41.37%;‘金草鱼’鲜味氨基酸总质量分数显著高于普通草鱼;必须氨基酸指数分别为79和78.金草鱼肌肉中脂肪酸种类比普通草鱼少2种(C21∶0和C20∶3),饱和脂肪酸总含量和多不饱和脂肪酸含量比普通草鱼低.‘金草鱼’和普通草鱼都含有较丰富的矿物元素,‘金草鱼’肌肉中矿物质总量比普通草鱼高,金草鱼的铜、铁、锌的比值较普通草鱼更为合理.【结论】与普通草鱼相比,‘金草鱼’具有较好的鲜味程度和更为合理的矿物元素组成. 展开更多
关键词 '金草鱼’ 普通草鱼 肌肉 营养成分 评价
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The Self-incompatibility (S) Locus of Antirrhinum Resides in a Pericentromeric Region
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作者 马闻师 周君莉 +2 位作者 赖钊 张燕生 薛勇彪 《Acta Botanica Sinica》 CSCD 2003年第1期47-52,共6页
The self-incompatibility ( S) loci from the Solanaceae, Rosaceae and Scrophulariaceae encode a class of ribonucleases, known as S RNases, which have been shown to control the pistil expression of self-incompatible rea... The self-incompatibility ( S) loci from the Solanaceae, Rosaceae and Scrophulariaceae encode a class of ribonucleases, known as S RNases, which have been shown to control the pistil expression of self-incompatible reaction. In the former two families, the S loci have been shown to be located near centromere. However, the chromosomal location of the S locus in Antirrhinum, a species of the Scrophulariaceae, is not known. To determine its chromosomal location and genomic organization, an S-2 RNase gene and its corresponding 63 kb BAC clone were separately used for fluorescence in situ hybridization (FISH) of mitotic metaphase chromosomes of a self-incompatible Antirrhinum line Of S2S5. The results showed that the S-2 RNase detected a doublet signal near the centromere of the smallest chromosome (2n = 16). Two separate doublet signals of the tested BAC sequence were shown on both sides of the centromeres of all eight pairs of the chromosomes, suggesting that the Antirrhinum S locus is located in a pericentromeric region. Furthermore, a retrotransposon, named RIS1 (retrotransposon in the S locus), which has not been identified yet in. Antirrhinum, was found next to S-2 RNase. Taken together, the centromeric location of the S locus from the three S-RNase-based self-incompatible families provides a further support on a common origin of their evolution as well as suppressed recombination. 展开更多
关键词 ANTIRRHINUM self-incompatibility (S) locus pericentromere RETROTRANSPOSON FISH
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Cloning and characterization of a FLORICAULA/LEAFY ortholog, PFL, in polygamous papaya 被引量:4
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作者 Qingyi YU Paul H. MOORE +2 位作者 Henrik H. ALBERT Adrienne H.K. ROADER Ray MING 《Cell Research》 SCIE CAS CSCD 2005年第8期576-584,共9页
The homologous genes FLORICAULA (FLO) in Antirrhinum and LEAFY (LFY) in Arabidopsis are known to regu- late the initiation of flowering in these two distantly related plant species. These genes are necessary also for ... The homologous genes FLORICAULA (FLO) in Antirrhinum and LEAFY (LFY) in Arabidopsis are known to regu- late the initiation of flowering in these two distantly related plant species. These genes are necessary also for the expression of downstream genes that control floral organ identity. We used Arabidopsis LFY cDNA as a probe to clone and sequence a papaya ortholog of LFY, PFL. It encodes a protein that shares 61% identity with the Arabidopsis LFY gene and 71% identity with the LFY homologs of the two woody tree species: California sycamore (Platanus racemosa) and black cottonwood (Populus trichocarpa). Despite the high sequence similarity within two conserved regions, the N-terminal proline-rich motif in papaya PFL differs from other members in the family. This difference may not affect the gene function of papaya PFL, since an equally divergent but a functional LFY ortholog NEEDLY of Pinus radiata has been reported. Genomic and BAC Southern analyses indicated that there is only one copy of PFL in the papaya genome. In situ hybridization experiments demonstrated that PFL is expressed at a relatively low level in leaf primordia, but it is expressed at a high level in the floral meristem. Quantitative PCR analyses revealed that PFL was expressed in flower buds of all three sex types - male, female, and hermaphrodite with marginal difference between hermaphrodite and unisexual flowers. These data suggest that PFL may play a similar role as LFY in flower development and has limited effect on sex differentiation in papaya. 展开更多
关键词 DIVERGENCE floral meristem identity gene flower development gene expression molecular phylogeny.
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Impact of light intensity on flowering time and plant quality of Antirrhinum majus L. cultivar Chimes White 被引量:2
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作者 MUNIRMuhammad JAMILMuhammad BALOCHJalal-ud-din KHATTAKKhalidRehman 《Journal of Zhejiang University Science》 CSCD 2004年第4期400-405,共6页
Shades of different light intensities (29%, 43%, 54%,60% or 68%) along with control (no shade) were studied to observe their effects on the flowering time and plant quality. A hyperbolic relationship was observed betw... Shades of different light intensities (29%, 43%, 54%,60% or 68%) along with control (no shade) were studied to observe their effects on the flowering time and plant quality. A hyperbolic relationship was observed between different light intensities under shade,and time to flowering.The total number of flower buds showed a curvilinear relationship with light intensities. Growth parameters related to the plant characteristics such as plant height,leaf area and plant fresh weight were improved under shading treatments at the expense of flowering time and number of flower buds.However,both linear and polynomial models applied assumed that cultivar Chimes White was equally sensitive to light intensity throughout development. 展开更多
关键词 Antirrhinum majus L. SNAPDRAGON Growth and development FLOWERING Light intensity.
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Light quality and temperature effects on antirrhinum growth and development 被引量:2
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作者 KHATTAK Abdul Mateen PEARSON Simon 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2005年第2期119-124,共6页
An experiment was carried out to examine the effects of light quality on the growth and development of antirrhinum under three different temperatures 19℃, 24℃ and 27℃ in glasshouses. Five different colour filters (... An experiment was carried out to examine the effects of light quality on the growth and development of antirrhinum under three different temperatures 19℃, 24℃ and 27℃ in glasshouses. Five different colour filters (i.e. 'Red absorbing', 'Blue absorbing', 'Blue and Red absorbing' and two 'partially Blue absorbing' materials) were tested, with one clear polythene as a control. Plant height, internode length and leaf area were significantly affected by the spectral filters as well as the temperature.Analysis of color filter's effect on presumed photoreceptors to exist indicated that antirrhinum plant height was regulated by the action of a blue acting photoreceptor (BAP) and not the phytochrome. There was no evidence for an effect ofphytochrome or BAP on time to flowering, however, increasing temperature levels effectively decreased the time to flowering. To predict the effects of different spectral qualities and temperature, simple models were created from data on plant height, internode length and time to flowering. These models were then applied to simulate the potential benefits of spectral filters and temperature in manipulation of growth control and flowering in antirrhinum. 展开更多
关键词 ANTIRRHINUM Light quality TEMPERATURE Spectral filters PHOTORECEPTORS
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