摘要： 以转 Bt 基因抗虫棉晋棉31 号为试验材料, 研究栽培密度、DPC 化控、化肥三因素不同组合对棉花干物质积累分配以及源库活性的调控效应.结果表明, 三因素优化组合可以构建源库优化平衡状态.当源库指数处于优化状态时, 干物质积累速率大幅度提高, 干物质在各器官分配比例相对协调;开花后同化产物向库器官输出率提高, 铃重增加;叶源生理活性显著提高, 功能叶时间延长.转 Bt 基因抗虫棉栽培关键在于构建源库优化平衡状态.
关键词:
转 Bt 基因抗虫棉,
源库活性,
优化调控
Abstract: Bt transgenic cotton Jinmian 31 was used to study the effects of source-sink activity and accumulation and distributation of assimilates of Bt cotton under different constitute of density and fertilizer and DPC for chemicaLcontroL.The resulted showed that the excellent constitute of three factors could construct superior balance of source-sink of Bt cotton.The speed of assilation accumulation was accelerated during the whole time when the ISS in these balance.The output rate of assilation after flowering for sink was enhanced and the weight of bolLwas increased.The leaf-source physiology activity was improved.At the end, the paper pointed out the key for Bt cotton culture was constructed the excellent balance of source-sink.
Key words:
Bt transgenic cotton,
Source-sink relation,
Excellent Balance
中图分类号:
赵海祯, 梁哲军, 齐宏立, 王玉香, 聂安全, 范志杰. 转 Bt 基因抗虫棉源库关系及调控效应研究[J]. 华北农学报, 2003, 18(2): 1-4. doi: 10.3321/j.issn:1000-7091.2003.02.001.
ZHAO Hai-zhen, LIANG Zhe-jun, QI Hong-li, WANG Yu-xiang, NIE An-quan, FAN Zhi-jie. Study on the Source-sink Relationship and Effects of Manipulation of Bt Transgenic Cotton[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2003, 18(2): 1-4. doi: 10.3321/j.issn:1000-7091.2003.02.001.