摘要
本文提出了作物茎鞘内输导组织对光合产物分子输送速度差异的测量方法、光合产物通过茎鞘某小段对输送速度差异度(E)的概念和E值[作物光合产物被鞘(或茎)输导组织输送的各个速度和基准速度差值的加权平均值与基准速度Vm的比]的测算公式,即:并实际测定了水稻品种665苗期倒二叶鞘上部的E值,E=0.3493。讨论了一定时间内流过茎或鞘某截面标记光合产物量(即流量)的活体动态测定方法.流量m的测算公式为:
method for measuring the variation
of transportation velocity of photosynthate in stemand sheath of rice was suggested.The formula
for calculating the variation degree(E)wasgiven as follows:E The value E in the sheath of the
second leaf of rice was 0.3493.The formula for calculating the amount of the transported 14
C-photosynthate was:m=
出处
《核农学报》
CAS
CSCD
1994年第1期46-50,共5页
Journal of Nuclear Agricultural Sciences
基金
国家自然科学基金
关键词
光合产物
输送速度
水稻
Photosynthate,transportation velocity,measuring,radioactivity
in living crop,rice