高油酸油菜产量与主要农艺性状的灰色关联度分析

Gray Relation Analysis on Yield and Main Agronomic Traits of High Oleic Acid

高油酸油菜菜籽中油酸含量高,菜油营养价值高,已成为当前油菜育种的一个热点,但目前国内通过认定的新品种较少,难以满足大面积推广应用的需求。应用灰色关联度分析法对8个高油酸油菜杂交种11个农艺性状进行比较分析,探讨高油酸油菜杂交种产量与农艺性状的关系。结果表明,高油酸油菜杂交种产量与主要农艺性状之间的关联顺序大小依次为主花序有效长度、结角密度、全生育期、株高、有效分枝部位、抗寒性(受冻率)、每角粒数、主花序有效角果数、千粒重、1次有效分支数、单株有效角果数。

High oleic acid oil has good nutritional and health functions,and there was in great need of more and more high oleic acid oil in China.Rapeseed has high oleic acid content and high nutritional,then the breeding of high oleic caid rapeseed vartities has become a hotspot in rapeseed breeding.However,at present,there was few new varieties identified in China,then it was difficult to meet the needs of large-scale popularization and applica-tion.A method of grey correlation degree analysis was applied to compare and analyze 11 agronomic traits of 8 high oil content hybrid rapeseed,the relationship between yield and agronomic traits of high oil content hybrid rapeseed was discussed.The results showed that the correlation order of yield and agronomic traits of high oil content rapeseed was effective length of main inflorescence>pod layer density>growth period>plant height>effective branch height>cold resistance(rate of endure the cold)>per pod grain number>effective pod number of main inflorescence>1000 grain weight>the first effective branch number>effective pod number per plant.