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小麦感光效应是小麦主要生态适应性状之一。为了解小麦感光特性与其叶部性状变化关系,本文对黑龙江省8个不同感光特性代表品种(系)进行了不同光照处理,结果表明:在小麦营养生长时期,光照长度的增加可促进叶的生长,而在进入营养生长与生殖生长并进阶段后,光照长度的增加则促进其发育进程,并且对光敏材料的促进作用大于光钝型材料。同时,从本研究结果还可以看出,经春化处理春化阶段结束,但生长锥尚未伸长的材料给以不同光照处理,其主茎出叶总数发生变化,这说明,经充分春化处理的材料,虽在激素水平上通过春化阶段,但在形态建成水平上尚未通过。这时若给以充分的光照长度,可使其顺利进入下一个发育阶段.若在此时给以短光照,则这种短光照会促进和延长叶原基的分化速度和时间,即产生短日春化效应。
Sensitivity of wheat is one of the major ecological adaptive traits in wheat. In order to understand the relationship between the sensitivities of wheat and the changes of leaf traits, eight different light-sensitive cultivars (lines) in Heilongjiang Province were illuminated by different light treatments. The results showed that the growth of leaves was promoted by the increase of light length during wheat vegetative growth , And after entering the vegetative and reproductive growth and advanced stage, the increase of light length is to promote its development process, and the promotion of photosensitive material is greater than the light-dull material. At the same time, it can also be seen from the results of this study that the vernalization stage of vernalization is completed, but the material of the growth cone that has not been extended gives different light treatments and the total number of leaves of its main stem changes. This shows that after vernalization, The treated material, though passed through the vernalization stage at the hormonal level, has yet to pass through at the level of morphogenesis. At this time if given a sufficient length of light, it can be successfully entered the next stage of development, if at this time to give a short light, then this short light will promote and extend leaf primordium differentiation speed and time, that is, short day spring Effect.