Nondestructive evaluation of melon quality is in great need of comprehensive study.Soluble solids content(SSC)and firmness are the two indicators of melon internal quality that mostly a®ect consumer acceptance.To...Nondestructive evaluation of melon quality is in great need of comprehensive study.Soluble solids content(SSC)and firmness are the two indicators of melon internal quality that mostly a®ect consumer acceptance.To provide guidance for fruit classification,internal quality standards was preliminarily established through sensory test,as:Melon with SSC over 12Brix,firmness 4–5.5 kgf·cm^(-2)2 were considered as satisfactory class sample;and SSC over 10Brix,¯rmness 3.5–6.5 kgf·cm^(-2) as average class sample.The near infrared(NIR)nondestructive detection program was set as spectra collected from the stylar-end,Brix expressed by the average SSC of inner and outer mesocarp,each cultivar of melon was detected with its own optimum integration time,and the second derivative algorithm was used to equalize them.Using wavelength selected by genetic algorithms(GA),a robust SSC model of mix-cultivar melon was established,the root mean standard error of cross-validation(RMSECV)was 0.99 and the ratio performance deviation(RPD)nearly reached 3.0,which almost could meet the accuracy requirement of 1.5Brix.Firmness model of mix-cultivar melon was acceptable but inferior.展开更多
On the basis of referring plenty of literatures, we summarized the research advance in effects of nitrogen on the internal quality of peach fruit. Most studies have shown that proper nitrogen application can improve i...On the basis of referring plenty of literatures, we summarized the research advance in effects of nitrogen on the internal quality of peach fruit. Most studies have shown that proper nitrogen application can improve internal quality of fruit, and excessive nitrogen application can reduce soluble solid and sugar contents of fruit, increase organic acid content, reduce fruit aroma, increase protein and amino acid contents, and increase or reduce vitamin C content. Relevant issues were discussed.展开更多
On the basis of referring plenty of literatures, we summed up the research advance in effects of sun light on the internal quality of peach fruit. This paper discussed the effect of light on the internal quality of pe...On the basis of referring plenty of literatures, we summed up the research advance in effects of sun light on the internal quality of peach fruit. This paper discussed the effect of light on the internal quality of peach fruit under the conditions of open cultivation, protected cultivation, bagging and surface covering with reflective film, the mechanism of occurrence and the technical measures to improve the utilization rate of light and light energy, and prospected the future research work.展开更多
Introgression lines are convenient populations for the identification fine-mapping and functional analysis of genes that are responsible for variations in traits, particularly quantitative trait genes. An introgressio...Introgression lines are convenient populations for the identification fine-mapping and functional analysis of genes that are responsible for variations in traits, particularly quantitative trait genes. An introgression line population of Solanum pennellii LA0716 in a fresh market tomato inbred line 1052 was developed by our group. This population was composed of 214 lines. In the present study, fi e quantitative trait loci(QTLs)for fruit weight, two QTLs for soluble solids content(SSC), three QTLs for plant height, and one QTL for leaf size were identifie using this introgression line population. Among these, fw3 a and fw4 a for fruit weight, ssc7 a for SSC, h4t2 a, h4t3 a, and h4t7 a for plant height, and lz12 a for leaf size were determined to be novel loci. These results serve as a foundation for fine-mappin and functional analysis of genes underlying these QTLs.展开更多
基金This work was supported by the Special Fund for Agro-scientific Research in the Public Interest (Projected No.201303075)the Earmarked Fund for Modern Agro-industry Technology Research System (Projected No.CARS-26-22)。
文摘Nondestructive evaluation of melon quality is in great need of comprehensive study.Soluble solids content(SSC)and firmness are the two indicators of melon internal quality that mostly a®ect consumer acceptance.To provide guidance for fruit classification,internal quality standards was preliminarily established through sensory test,as:Melon with SSC over 12Brix,firmness 4–5.5 kgf·cm^(-2)2 were considered as satisfactory class sample;and SSC over 10Brix,¯rmness 3.5–6.5 kgf·cm^(-2) as average class sample.The near infrared(NIR)nondestructive detection program was set as spectra collected from the stylar-end,Brix expressed by the average SSC of inner and outer mesocarp,each cultivar of melon was detected with its own optimum integration time,and the second derivative algorithm was used to equalize them.Using wavelength selected by genetic algorithms(GA),a robust SSC model of mix-cultivar melon was established,the root mean standard error of cross-validation(RMSECV)was 0.99 and the ratio performance deviation(RPD)nearly reached 3.0,which almost could meet the accuracy requirement of 1.5Brix.Firmness model of mix-cultivar melon was acceptable but inferior.
基金Supported by Key Technology R&D Program of Hebei Province(16226313D-3)Innovation Project of Hebei Academy of Agriculture and Forestry Sciences(2019-3-5-1,F18C10001,2018100201)Shijiazhuang Comprehensive Experimental Station of China Agro-industry(Peach Industry)Research System(CARS-31-Z-2)
文摘On the basis of referring plenty of literatures, we summarized the research advance in effects of nitrogen on the internal quality of peach fruit. Most studies have shown that proper nitrogen application can improve internal quality of fruit, and excessive nitrogen application can reduce soluble solid and sugar contents of fruit, increase organic acid content, reduce fruit aroma, increase protein and amino acid contents, and increase or reduce vitamin C content. Relevant issues were discussed.
基金Supported by Innovative Engineering Project of Hebei Academy of Agriculture and Forestry Sciences(2018100201,2019-3-5-1,2019-1-1-6)Hebei Science and Technology Support Program(16226313D-3)Shijiazhuang Comprehensive Experimental Station of National Peach Industry Technology System(CARS-31-Z-2)。
文摘On the basis of referring plenty of literatures, we summed up the research advance in effects of sun light on the internal quality of peach fruit. This paper discussed the effect of light on the internal quality of peach fruit under the conditions of open cultivation, protected cultivation, bagging and surface covering with reflective film, the mechanism of occurrence and the technical measures to improve the utilization rate of light and light energy, and prospected the future research work.
基金The National High-Tech Research Development Program in China(863 Program2012AA100105)+1 种基金the National Sci-tech Support Plan(2012BAD02B02)the China Agriculture Research System(CARS-35)
文摘Introgression lines are convenient populations for the identification fine-mapping and functional analysis of genes that are responsible for variations in traits, particularly quantitative trait genes. An introgression line population of Solanum pennellii LA0716 in a fresh market tomato inbred line 1052 was developed by our group. This population was composed of 214 lines. In the present study, fi e quantitative trait loci(QTLs)for fruit weight, two QTLs for soluble solids content(SSC), three QTLs for plant height, and one QTL for leaf size were identifie using this introgression line population. Among these, fw3 a and fw4 a for fruit weight, ssc7 a for SSC, h4t2 a, h4t3 a, and h4t7 a for plant height, and lz12 a for leaf size were determined to be novel loci. These results serve as a foundation for fine-mappin and functional analysis of genes underlying these QTLs.
