The family farm of the Upper Solim?es region has maintained the great genetic variability of the pumpkin (Cucurbita maxima Duchesne) by the in situ conservation of the landraces which are widely used as human food. Th...The family farm of the Upper Solim?es region has maintained the great genetic variability of the pumpkin (Cucurbita maxima Duchesne) by the in situ conservation of the landraces which are widely used as human food. The aim of this study was to estimate the current level of genetic variability of pumpkin landraces by means of estimation techniques of genetic parameters. Landraces areas samples were the family farming production units located in floodplains ecosystems of Benjamin Constant (Upper Solim?es River) and Iranduba (Lower Solim?es River), Amazonas. The split-plot designs were adopted at the treatments where the main plots were the five pumpkin landraces and one commercial cultivar. Each landrace was obtained six half sib families distributed in the sub-plots. Among the results of this study, it can be concluded that the genetic variation within the each landrace is greater than the genetic variation among the landraces. The qualitative morphological characteristics bring together half-sib families collected in geographically distant locations. It can be concluded that, through the estimation of genetic parameters, there is genetic variability among local cultivars collected in family farming of Benjamin Constant and Iranduba, Amazonas.展开更多
Based on the general survey of crop germplasm resources in Hubei Province,the third survey and collection of crop germplasm resources was conducted in 199 villages of 19 counties( cities/districts) of Hubei Province d...Based on the general survey of crop germplasm resources in Hubei Province,the third survey and collection of crop germplasm resources was conducted in 199 villages of 19 counties( cities/districts) of Hubei Province during 2015-2017. A total of 1 072 accessions of vegetables were collected. The taxonomy,distribution,agronomic traits and preservation of the vegetable germplasm resources,as well as the main vegetable resources and characteristic resources in the 19 counties( cities/districts) were analyzed. The results showed that the local vegetable landraces cover 26 families. Hong'an County,Zhongxiang City,Gucheng County,Nanzhang County and Yuan'an County have more vegetable landraces than other counties( cities/districts). The local landraces are characterized by good quality,strong resistance and tolerance to barrenness,but most of them are distributed in remote areas with low purity,low yield and serious threat of degradation. The local vegetable landraces are mostly preserved by some well-educated elder farmers. The vegetable cultivars of Cruciferae,Solanaceae,Cucurbitaceae,Liliaceae and Leguminosae account for 71. 46% of the total vegetable resources. The characteristic vegetable resources such as pearl flower( Staghylea bumalda DC.),scallion( Allium paepalanthoides) and elephant-foot yam( Amorphophallus spp.) are scattered in the mountainous areas of Hubei Province. This study can provide reference for the protection and utilization of local resources of vegetables in Hubei Province.展开更多
本研究利用10种与表型性状有关的44个高通量KASP(Kompetitive allele specific PCR)分型标记技术,检测了117份新疆小麦地方品种的表型、品质、面粉色泽、籽粒蛋白质含量、粒重、抗逆、抗病等相关基因。结果表明,Ppd-D1光周期位点检测到...本研究利用10种与表型性状有关的44个高通量KASP(Kompetitive allele specific PCR)分型标记技术,检测了117份新疆小麦地方品种的表型、品质、面粉色泽、籽粒蛋白质含量、粒重、抗逆、抗病等相关基因。结果表明,Ppd-D1光周期位点检测到非敏感材料116份。春化、矮杆基因位点检测中,冬性材料比例97%以上,矮化基因比例96%以上。Glu-A3和Glu-B3的标记检测中,高筋材料的比例仅占1%。有利等位基因Psy-B1中被检测出低黄色素材料,占95.7%;Pds-B1和Psy-A1基因中,以高黄色素材料为主。NAMA1检测出品质相关A1b、A1d类型材料116份。GCP_DUP标记鉴定携带低分子量谷蛋白亚基的材料占97%以上。抗病相关基因中,以抗叶锈病的材料为主。113份材料检测为抗穗发芽类型。展开更多
文摘The family farm of the Upper Solim?es region has maintained the great genetic variability of the pumpkin (Cucurbita maxima Duchesne) by the in situ conservation of the landraces which are widely used as human food. The aim of this study was to estimate the current level of genetic variability of pumpkin landraces by means of estimation techniques of genetic parameters. Landraces areas samples were the family farming production units located in floodplains ecosystems of Benjamin Constant (Upper Solim?es River) and Iranduba (Lower Solim?es River), Amazonas. The split-plot designs were adopted at the treatments where the main plots were the five pumpkin landraces and one commercial cultivar. Each landrace was obtained six half sib families distributed in the sub-plots. Among the results of this study, it can be concluded that the genetic variation within the each landrace is greater than the genetic variation among the landraces. The qualitative morphological characteristics bring together half-sib families collected in geographically distant locations. It can be concluded that, through the estimation of genetic parameters, there is genetic variability among local cultivars collected in family farming of Benjamin Constant and Iranduba, Amazonas.
基金Supported by National Key Research and Development Program of China(2017YFD0101903)Species and Breed Resource Protection Fee of Ministry of Agriculture of China(111721301354052034)+2 种基金Third National Survey and Collection Action on Crop Germplasm ResourcesKey Science and Technology Innovation Plan of Hubei Province(2016ABA095)Earmarked Fund for China Agriculture Research System(CARS-23-G28)
文摘Based on the general survey of crop germplasm resources in Hubei Province,the third survey and collection of crop germplasm resources was conducted in 199 villages of 19 counties( cities/districts) of Hubei Province during 2015-2017. A total of 1 072 accessions of vegetables were collected. The taxonomy,distribution,agronomic traits and preservation of the vegetable germplasm resources,as well as the main vegetable resources and characteristic resources in the 19 counties( cities/districts) were analyzed. The results showed that the local vegetable landraces cover 26 families. Hong'an County,Zhongxiang City,Gucheng County,Nanzhang County and Yuan'an County have more vegetable landraces than other counties( cities/districts). The local landraces are characterized by good quality,strong resistance and tolerance to barrenness,but most of them are distributed in remote areas with low purity,low yield and serious threat of degradation. The local vegetable landraces are mostly preserved by some well-educated elder farmers. The vegetable cultivars of Cruciferae,Solanaceae,Cucurbitaceae,Liliaceae and Leguminosae account for 71. 46% of the total vegetable resources. The characteristic vegetable resources such as pearl flower( Staghylea bumalda DC.),scallion( Allium paepalanthoides) and elephant-foot yam( Amorphophallus spp.) are scattered in the mountainous areas of Hubei Province. This study can provide reference for the protection and utilization of local resources of vegetables in Hubei Province.
文摘本研究利用10种与表型性状有关的44个高通量KASP(Kompetitive allele specific PCR)分型标记技术,检测了117份新疆小麦地方品种的表型、品质、面粉色泽、籽粒蛋白质含量、粒重、抗逆、抗病等相关基因。结果表明,Ppd-D1光周期位点检测到非敏感材料116份。春化、矮杆基因位点检测中,冬性材料比例97%以上,矮化基因比例96%以上。Glu-A3和Glu-B3的标记检测中,高筋材料的比例仅占1%。有利等位基因Psy-B1中被检测出低黄色素材料,占95.7%;Pds-B1和Psy-A1基因中,以高黄色素材料为主。NAMA1检测出品质相关A1b、A1d类型材料116份。GCP_DUP标记鉴定携带低分子量谷蛋白亚基的材料占97%以上。抗病相关基因中,以抗叶锈病的材料为主。113份材料检测为抗穗发芽类型。
