|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 白菜抽薹相关性状遗传分析显示文摘研究与白菜抽薹相关性状的遗传特性,为白菜类作物晚抽薹育种应用提供理论依据。试验以抽薹指数、开花时间和薹长5cm时间分别作为抽薹早晚的评价标准,应用植物数量性状主基因+多基因混合遗传模型,对晚抽薹大白菜高代自交不亲和系(P1)和易抽薹欧洲白菜型油菜自交系(P2)及杂交所获得的F1、B1、B2和F2各世代群体进行联合遗传分析。结果表明,抽薹指数性状和薹长5cm时间性状均受2对加性-显性-上位性主基因控制(B-1模型),开花时间性状受1对加性-显性主基因+加性-显性-上位性多基因控制(D模型)。与抽薹相关的3个性状各分离世代(B1、B2、F2)均未检测到多基因遗传,其主基因遗传率分别为抽薹指数96.22%(B1)、93.33%(B2)、93.55%(F2);开花时间70.68%(B1)、70.68%(B2)、70.64%(F2);薹长5cm时间79.44%(B1)、79.55%(B2)、79.38%(F2),环境条件对白菜抽薹性状影响较大。由此可知,对白菜抽薹性状的遗传改良应以主基因为主,适宜在早期世代进行选择并注意环境条件影响。 | 纪小红 尹乐 沈宝宇 张磊 王玉刚 冯辉 | 2013 | 中国农学通报2013，29，4： | 8 |
| 2 | 白菜春化需要的QTL定位分析显示文摘本研究以一年生(春化不需要型)白菜型油菜自交系RcBr与二年生(春化需要型)大白菜高代自交系08A061为亲本材料,在春化和未春化2种不同春化处理下,调查F2:3家系薹长5cm时间和开花时间的差异,对春化需要性状进行QTL定位和分析。结果表明,春化需要为隐性性状,两种表型测量方法共检测到7个与春化需要相关的QTLs,分布于A02和A06连锁群上,各QTL可解释的表型变异在0.08%-22.52%之间。其中在A02连锁群顶部重复检测到VR-DE01和VR-FT01,表型变异贡献率分别为22.52%和14.54%,均与BrFLC2基因紧密连锁。在A06连锁群上检测到VR-DE03和VR-DE04,解释表型变异分别为13.30%和13.64%。这些QTL将为研究白菜的春化需要与抽薹的遗传关系以及晚抽薹品种的分子辅助选育奠定理论基础。 | 张磊 纪小红 吕茜茜 刘亚婷 王玉刚 冯辉 | 2014 | 分子植物育种2014，12，4： | 2 |
| 3 | Inheritance Analysis of Bolting Associated Traits Using Mixed Major Gene Plus Polygene Model in Brassica rapa显示文摘[Objective] This study aimed to analyze the inheritance of bolting associated traits in Brassica rapa,which will provide useful information in a breeding program for late-bolting or bolting-resistant cultivars of Chinese cabbage.[Method] Three phenotypic measurements,bolting index,flowering time,days to 5 cm elongated stalk,respectively were used for inheritance analysis of six generations,P1(bolting resistant inbreed line),P2(vernalization independent type) and their filial generations F1,B1,B2and F2,using the mixed major-gene plus polygene inheritance model.[Result] The two traits,bolting index and days to 5 cm elongated stalk,both were controlled by two major genes with additive-dominant-epistatic effects( B-1 model) in hybrid. The flowering time was controlled by one major gene with additive-dominant effects plus additive-dominant-epistatic effects( D model). The heritability of the major genes in B1,B2and F2were 96. 22%,93. 33%,93. 55% for bolting index,70. 68%,70. 68%,70. 64% for flowering time,79. 44%,79. 55%,79. 38% for days to 5-cm elongated stalk,respectively,but no polygene heritability was detected in B1,B2and F2generation. It indicated that the bolting trait in Brassica rapa was controlled by one or tow major genes.[Conclusion] This implied that in the genetic improvement for bolting resistant trait major gene was a main factor. It is fit for early selection and environment factor should be mentioned. | Xiaohong JI Lei ZHANG Xixi LU Yating LIU Yugang WANG Hui FENG | 2013 | Agricultural Biotechnology2013，2，4： | 1 |
| 4 | 分子遗传多样性及在牧草资源中的研究进展显示文摘本文综述了分子遗传多样性的发展概况,详细介绍了不同分子标记方法及其在牧草资源中的应用,为牧草资源的遗传多样性研究提供参考。 | 班骞 黄道梅 韩永芬 | 2017 | 农技服务2017，34，14： | 0 |
| 5 | QTL Mapping of Vernalization Requirement in Brassica rapa显示文摘An F2 population,derived from a cross between the vernalization independent genotype‘Rc Br'and the vernalization dependent genotype‘08A061',was developed to construct a linkage map with 165 SSR and In Del markers. QTL analysis was performed by two phenotypic evaluation( days to 5 cm elongate stalk and flowering time) based on the difference in F2: 3families under vernalization and no vernalization. The results showed that the vernalization requirement was recessive in Brassica rapa. Seven QTLs that controlled vernalization requirement were detected on A02 and A06 linkage groups,which explained phenotypic variation ranging from 0. 08% to 22. 52%. Two QTLs( VR-DE01,VR-FT01) were detected on the top of A02,which explained 22. 52% and 14. 54% of the phenotypic variation,respectively,and closely linked with Br FLC2 gene. Two QTLs( VR-DE03,VR-DE04) were detected on A06 with 13. 30% and 13. 64% of phenotypic variation. These detected QTLs will provide useful information on understanding the genetic basis between vernalization requirement and bolting,and that will be useful for marker-assisted selection( MAS) in a breeding program for bolting resistant cultivars. | Yating LIU Lei ZHANG Xiaohong JI Xixi LV Yugang WANG Hui FENG | 2015 | Agricultural Biotechnology2015，4，4： | 0 |
| 6 | 黔中地区8个苦荬菜新品系适应性评价显示文摘为筛选适宜贵州黔中地区生长的优质牧草苦荬菜品系提供参考,设计8个苦荬菜新品系的种植试验,观察其物候期并测定其再生速率、农艺性状及产量。结果表明,苦荬菜新品系L1-3、牧宝、L2-1为早熟新品系,L7-6、L2-5、L3-5为晚熟新品系,L3-5生育期最长,达208 d,牧宝生育期最短,达193 d。L2-5出苗速度较对照更快,莲座期更长,L2-5、L7-6再生速度快,与其他新品系差异显著;L2-5干草产量达1540 kg/hm^(2),比对照增产30.73%,差异极显著,茎叶比0.52,品质高。苦荬菜各品系之间叶长、叶宽、株高及生殖枝数存在不同程度差异,L2-5株型高大,达183.75 cm。综合评价认为,L2-5与L7-6为黔中地区优质苦荬菜牧草。 | 孙方 班骞 欧二绫 杨春燕 钟理 田方 | 2021 | 农技服务2021，38，12： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员