摘要
本文利用5个亲本组成的8个杂交组合,对白菜型冬油菜农艺性状的杂种优势进行了比较分析。结果表明:白菜型冬油菜杂种单株籽粒产量、单株角果数、分枝数、株高、主花序长度和主花序角果数具有明显的杂种优势,其中所有组合的株高和一次和二次分枝数表现为明显的中亲优势,75%杂交组合的株高和二次分枝数、87%杂交组合的一次分枝数表现为超高亲优势。相关性分析显示,在确保角果数、分枝数和株高的状况下,通过增加千粒重和每角粒数,亦可有效的提高白菜型冬油菜的杂种优势。
The study used 8 Hybrids produced by 5 parents to analyze heterosis of agronomic traits of winter rapeseed.The results showed that the grain yield per plant、siliques per plant、number of branches、plant height、the main inflorescence length and the main inflorescence pod number had higher heterosis,and all combinations of plant height and number of primary and secondary branches showed significant mid-parent heterosis,75%combinations of plant height and number of secondary branches、87%combinations of primary branches showed over-high parent heterosis.Correlation analysis showed that increasing the 1000-grain weight and grain number per pod at the condition of ensuring the pod number,branch number and plant height,which can effectively improve the heterosis of Winter Brassica rapa.
出处
《西藏农业科技》
2014年第2期8-14,共7页
Tibet Journal of Agricultural Sciences
