Seedling development in a Brassica napus diversity set and its relationship to agronomic performance
Seedling development in a Brassica napus diversity set and its relationship to agronomic performance
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DOI：
10.1007/s00122-012-1912-9
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发表时间：
2012-10-01
影响因子：
5.4
通讯作者：
Stich, Benjamin
中科院分区：
文献类型：
--
作者：
Koerber, Niklas;Wittkop, Benjamin;Stich, Benjamin
甘蓝型油菜是欧洲主要的油料作物，因此具有很高的经济重要性。本研究的目的是检验（1）全物种B的表型多样性模式。对518份甘蓝型油菜自交系的苗期发育、农艺性状和种子品质等性状进行了比较分析，并对所测性状间的相互关系及其在相关性状选择中的应用进行了研究。B。在温室和田间试验中评估了油菜种质组的几种幼苗发育、农艺和种子质量性状。这些性状在个体性状类别内高度相关，在不同性状类别之间中度相关。我们观察到的8个种质类型之间的表型多样性的差异。幼苗发育性状的表型多样性平均比农艺性状和种子质量性状的表型多样性减少更明显，这表明植物育种者需要对前者进行新的遗传变异的渗入。
Brassica napus L. is the leading European oilseed crop and has therefore a high economical importance. The objectives of our study were to examine (1) the patterns of phenotypic diversity in a species-wide B. napus germplasm set of 518 inbreds with respect to various seedling development, agronomic, and seed quality traits as well as (2) the interrelationship of the examined traits and their use in selection on correlated traits. The B. napus germplasm set was evaluated in greenhouse and field trials for several seedling development, agronomic, and seed quality traits. The traits were highly correlated within the individual trait categories and moderately correlated between the different trait categories. We observed differences in phenotypic diversity among the examined eight germplasm types. The reduction of phenotypic diversity was on average more pronounced for the seedling development traits than for the agronomic and seed quality traits, suggesting that plant breeders need to introgress new genetic variation with respect to the former.