一个新的水稻内卷叶突变体的光合生理效应-论文.pdf

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1、安徽农业科学，JournalofAnhuiAgfi．Sc1．2014，42(23)：7743—7745，7747责任编辑刘月娟责任校对况玲玲一个新的水稻内卷叶突变体的光合生理效应龚晓平，况晓明，罗挺，李加胜，赵许兵，赵冰峰，曾胜，杨霞，张致力(重庆市渝东南农业科学院，重庆408000)摘要[目的]明确水稻叶片前平后卷的主要生物学效应，为RL(t)在水稻育种中的应用提供理论依据。[方法]在水稻杂交后代材料中发现一个新的内卷叶突变材料，暂时命名为RL(t)，研究了RL()与平展叶姊妹系0731-3-J

2、．1B在叶片受光姿态、光合效率及细胞组织结构的差异。[结果]胜(t)较平展叶姊妹保持系三片功能叶明显表现出卷曲度大、挺直度高、叶基角小、披垂角小，相应地，提高了卷叶保持系群体各层尤其上部和中部的透光率；三片功能叶的气孔导度、胞间CO，浓度和剑叶、倒二叶的蒸腾速率显著高于平展叶姊妹保持系，从而提高了RL(t)剑叶、倒二叶的光合速率；由于卷叶保持系部分泡状细胞适度萎缩变小，导致叶片内向卷曲。[结论]该研究为内卷叶性状应用于水稻高产育种提供了理论依据。关键词水稻；叶片卷曲度；挺直度；光合速率；透光率中图

3、分类号s511文献标识码A文章编号0517—6611(2014)23—07743—03StudyonPhotosyntheticandPhysiologicalEfectsofaNovelAdaxially·RolledCharacterinRice(OryzasativaL．)G0NGXiao-ping，ZHANGZhi-iietal(YudongnanAcademyofAgriculturalSciences，Chongqing408000)AbstractlObjectivelrrI1ema

4、inbiologicaleffectsofLeafrollingofricewasstudiedtoprovidethetheoreticalbasisfortheapplicationofRL(t)inthebreedingoftherice．1Method1Aricemutantwithadaxially—rolledleafwasfoundinbreeding，temporarilynamedasRL(t)．Thediffereneeswereresearchedinwhichlightin

5、terceptionstructure．1ighttransmissionphotosyntheticefficiencyandcellularstructurecomparisonbetween碰(t)anditssisterlinesthathadflatleaf．fResultfBothleafrollingindexandleaferectingindexofRL(t)werehigherthanthosein0731-3—1．1B．Howeveritsbasicleafangleandl

6、eafdroopingangleweresignificantlylowerthanthoseincr73l一3一l—lBinupperthreeleaves，whichcausedagreatraiseinthephotosyntheticrateonaccountofthelighttransmittanceofRL(t)’spopulationweresignificantlyhigherthanthatof0731—3一一1Bespeciallytheupperandmiddlepart．

7、ThestomatalconductanceandtheintercellularCO，concentrationoftheupperthreeleavesandtran—spirationrateoftheflagandthesecondleafwerealsosignificantlyhigherthanthatof073一3—1—1B．Thebulliformcellsbecamesmaller．1eadingtotherollingupofleaves．[Conclusion]Thestu

8、dyprovidedatheoreticalbasisfortheprincipleofhigh—yieldingbreedingwiththeapplicationoftheadaxially—rolled1eafmutantinrice．Keywor凼Rice：Leafrollingindex；Leaferectingindex；Photosyntheticrate；Lighttransmittance．水稻叶片是进行光合作用、形成光合产物的重要场所，B杂交育成叶片前平后卷的三