| 摘要: |
| 研究了小麦突变体返白系返白现象发生的生理基础及抑制春生分蘖的机制。结果表明，与对照相比，返白系小麦在返白过程中，气孔阻力增大，蒸腾、净光合及呼吸速率下降；叶片可溶性糖及ATP含量降低、淀粉含量略有上升；复绿过程中上述变化均可逐渐恢复到对照的水平。分析认为，返白现象发生时，植株的生理活动减弱，有效地限制了春季无效分蘖的发生；复绿过程其生理活动又迅速增强。 |
| 关键词: 小麦突变体，蒸腾作用，光合作用，呼吸作用，返白阶段 |
| DOI： |
| 分类号:S512.103 |
| 基金项目:国家自然科学基金资助项目 |
|
| Studies on the Meehanism of Albino Charaeteristieof Winter Wheat Mutant“the Albinism Line”IV.Primary Studies on the Changes of Transpiration,Photosynthesis and Respiration at Albino Stage |
|
Su Xiaojing,Wang Peihong,Wang Yongji,Su Xiaojing,Wang Peihong,Wang Yongji,Su Xiaojing,Wang Peihong,Wang Yongji
|
| Abstract: |
| It is reported that threr are changes of transpiation,photosynthesis and dark respiration of winter wheat "the albinism line"at albino stage,compared with its wild variety "Aibian No.1".The results show that,in the albino process,the stoma resistance of the mutant increases,the transpiration,net photosynthesis,dark respirationrate,content of chlorophylls,leaf soluble sugar and ATP decrease,whereas the content of leaf starch has a little increase.In the regreening process,all the above changes of the mutant reverse up to the level of the wild.It is considered that the reason why the nonefficient spring tillers of the mutant are inhibited is the decrease of the physiological activity of the mutant plants in the albino process. |
| Key words: wheat mutant,transpiration,photosynthesis,respiration,albino stage |
