冬小麦生长发育与根系关系的^(32)P示踪研究  

THE RELATIONSHIP BETWEEN GROWTH AND DEVELOPMENT OF ABOVE GROUND ORGANS WITH ROOTS OF WINTER WHEAT USING 32 P TRACER

作　　者：王志芬[1] 陈学留[1] 余美炎 王同燕[1] 王奎波[1] 任凤山[2] 徐兵[2] 

机构地区：[1]山东省农业科学院原子能所 [2]山东省农业科学院中心实验室

出　　处：《核农学报》1997年第3期173-178,共6页Journal of Nuclear Agricultural Sciences

基　　金：山东省自然科学基金

摘　　要：利用３２Ｐ示踪技术，研究了冬小麦地上部生长发育与根系的相关性，结果表明：孕穗前，根、茎、叶干重的累积是同步的，孕穗后为异步。整个生育期中，茎、叶与根干重的累积极显著相关。而孕穗后，穗干重的累积与根干重之间并不存在直接的相关性。在３２Ｐ物质分配量上，茎、叶与根分别呈极显著相关，而穗与根的相关则不显著，与其生物量的累积是一致的。茎、叶、穗的代谢活性与根的代谢活性的变化分别呈极显著相关。The relationship of growth and development between above ground organs and roots of winter wheat, Lumai 14, was studied using 32 P tracer. The results showed that before the spike formation, dry matter accumulation in roots, stems and leaves were synchronous, and after that they were asynchronous. The dry matter accumulation in stems and leaves were significantly related to that of roots throughout the whole growing period of winter wheat. After the spike formation, the dry matter accumulation in spikes was not related to that of roots. The 32 P distribution in stems and leaves were related to that of roots significantly, however, the relatioinship between spikes and roots was not obviously related, which was consistent with the dry matter accumulations in various organs. The metabolic activities of stems, leaves and spike were significantly related to that of roots respectively.

关 键 词：冬小麦 干重累积 代谢活性 生长发育 根系 

分 类 号：S512.101[农业科学—作物学]