摘要
甘蓝型聚生角果油菜与甘蓝型单角果油菜的主要差异是花器官。聚生角果油菜的果皮面积比单角果增加５０％以上，聚生角果果皮光合速率高于单角果中油８２１、文油６号１７．４％～２０９％，光合产物转移到籽粒中的速度高于中油８２１、文油６号１３．４％～２３％，聚生角果２８６４、２９０４果皮光合作用对籽粒的贡献为６６％—７８．４％。每果柄粒重：叁角＞双果＞单角果。聚生角果吸收氮、磷的量和比例与蜀杂６号、中油８２１不同，蕾期吸收的磷在籽粒中的分配率与蜀杂６号差异较小而显著高于中油８２１；同位素示踪表明聚生角果油菜籽粒对１５Ｎ的利用率和分配率介于蜀杂６号和中油８２１之间。
The main difference between aggregate siliqua and single siliqua in Brassica napus L. was in flower organ.The area of pericarp of aggregate siliqua was 50% more than that of single siliqua.The photosynthetic efficieney of pericarp and the rate of photosynthesis product distribution in seeds of aggregate siliqua were 17.4 20% and 13.4 23% more than those of single siliqua varieties Zhongyou 821 and Wenyou No.6,respectively.The contribution of the photosynthesis product of pericarp to seeds for aggregate siliqua varieties 2864 and 2904 was 66%-78.4%.Weight of seeds per fruit handle was:tri siliqua>bi siliqua>single siliqua.The quantity and proportion of absorbed N and P in aggregate siliqua were different from those in single siliqua vareties Shuzha No.6 and Zhongyou 821.The rate of 32 P absorption at flower bud period in aggregate siliqua varieties was a little different from that in Shuzha No.6,but the distribution of absorbed 32 P to the seed of aggregate siliqua was higher than that of Zhonyou 821 singificantly.The tracer determination of isotope indicated that:the rates of utilization and distribution of 15 N to seeds in aggregate siliqua were between those in Shuzha No.6 and those in Zhongyou 821.
出处
《西南农业学报》
CSCD
北大核心
1998年第4期61-67,共7页
Southwest China Journal of Agricultural Sciences
基金
国家自然科学基金
四川省九五攻关项目
关键词
油菜
聚生角果
遗传
生理
Rapeseed Aggregate siliqua Heredity Physiology Isotope
