摘要
比较研究了大穗型和多穗型小麦品种的分蘖发育特征及其代谢基础。结果表明 ,与多穗型品种相比 ,单株分蘖较少的大穗型品种分蘖期具有较低的 IAA氧化酶 (IAAO)活性、较高的 IAA含量和较强的碳代谢活性。在分蘖的两极分化期 ,大穗型品种在碳、氮代谢和同化物分配方面存在较强的主茎优势 ,因此 。
The metabolic bases of tiller growth of large-spike and multi-spike wheat cultivar were comparatively studied.The results indicated that,compared with multiple-spike cultivar,large-spike cultivar with fewer tillers per plant had lower activity of indole acetic acid oxidase (IAAO),higher IAA content and stronger carbon metabolism during tillering stage.At tiller polarizing stage,the main shoot of large-spike cultivar had obvious dominance in carbon and nitrogen metabolism and distribution percentage of 14C-assimilate.Therefore,it was more difficult for tillers of large-spike cultivar to develop to bear an ear.
出处
《西北植物学报》
CAS
CSCD
2002年第2期215-220,共6页
Acta Botanica Boreali-Occidentalia Sinica
基金
国家重点基础研究发展规划项目 ( G1 9980 1 0 1 0 0 )
河南省自然科学基金项目 ( 990 4 0 1 1 90 0 )
关键词
小麦
大穗型
多穗型
分蘖发育
代谢基础
品种
wheat
large-spike cultivar
multi-spike cultivar
tiller growth
metabolic basis
