DPC对麦套棉^(14)C同化物运转分配及再分配的影响  

Effect of DPC on Translocation Redistribution or 14 C Assimilate of Cotton Interplanted with Wheat

作　　者：王明友[1,2] 董玉香 高淑萍 杨秀凤 曹鸿鸣 

机构地区：[1]山东农业大学德州专科部 [2]山东省德州市农科所

出　　处：《棉花学报》1999年第1期39-41,共3页Cotton Science

基　　金：山东省科委资助;山东省自然科学基金

摘　　要：试验结果表明，棉花（Ｇ．ｈｉｒｓｕｔｕｍＬ．）苗期、蕾期和花铃期ＤＰＣ化调可显著增加１４Ｃ同化物在根、蕾及花铃中的分配率，降低１４Ｃ同化物在顶（边）心中的分配率。从苗期到花铃期，随着生育期的延后，在吐絮阶段茎叶等营养器官滞留的１４Ｃ同化物逐渐减少，棉铃尤其是子棉的分配比率逐渐提高。ＤＰＣ化调减少了茎叶和铃壳的１４Ｃ同化物滞留量，增加了在子棉和根中的分配率。It was found that DPC significantly increased the patrtitioning percentage of 14 C assimilates into roots, squares, flowers and bolls of cotton (G.hirsutum L.) plant, while decreased the partitioning percentage of 14 C assimilates into buds at seeding, squaring, flowering and fruiting stages, respectively. The experimental results indicated that partitioning percenage of 14 C assimilates produced at seeding, squaring, flowering and fruiting stage into the seed cotton during fruiting dehiscence became higher and higher, while the percentage of 14 C assimilates remained in vegetative organs (including boll hulls) became lower and lower, as cotton plants grew and developed. As affected by DPC, the percentage of 14 C assimilates remained in vegctative organs increased, but the percentage of 14 C assimilates into seed cotton decreased.

关 键 词：棉花 套作 ^14C同化物 运转 再分配 

分 类 号：S562.01[农业科学—作物学]