冬小麦抽穗始期标记^(14)C-同化物分配与运转的研究  

DISTRIBUTION AND TRANSPORTATION OF 14CASSIMILATE LABELEDAT PRELIMINARY HEADING STAGE IN WINTER WHEAT

作　　者：许为钢[1] 胡琳[1] 吕金印[2] 刘军[2] 

机构地区：[1]河南省农业科学院小麦研究所 [2]西北农业大学同位素应用研究室

出　　处：《核农学报》1998年第1期7-11,共5页Journal of Nuclear Agricultural Sciences

摘　　要：采用１４Ｃ示踪法研究小麦表明，始穗期标记１４Ｃ同化物的分配与运转在两个冬小麦品种之间存在着显著差异，西农１３７６的１４Ｃ同化物开花前在茎、穗中的分配率较高，开花后茎中１４Ｃ同化物输出时间长、输出量大，因而１４Ｃ同化物在籽粒中分配率较高，籽粒灌浆较好。试验还表明，１４Ｃ同化物分配率和运转能力还表现出上部节位器官大于下部节位器官，且西农１３７６上下部器官分配率和运转能力的差异大于小偃１０７。 study on distribution and transportation of 14Cassimilates labeled at preliminary heading stage in two winter wheat cultivars was carried out.The results showed that there were significant differences in distribution and transportation of 14Cassimilates between two cultivars.For cultivar Xinong 1376,before anthesis the distribution percentages of 14Cassimilates were higher in spike and stem and after anthesis the 14Cassimilate exportating duration was longer and the amount was larger from stem,therefore it had a higher distribution percentage of 14Cassimilate in grain and a better filling characteristic.It was indicated that the distribution percentage and transportation abilities of 14Cassimilate were higher in top organs than in bottom organs.This difference between top and bottom was more obvious with Xinong 1376.

关 键 词：小麦 ^14C-同化物 分配与运转 抽穗始期 

分 类 号：S512.101[农业科学—作物学]