玉米自交系低植酸突变体的生物学与光合特性研究  

BIOLOGICAL AND PHOTOSYNTHETIC CHARACTERISTICS OF LOW PHYTIC ACID MAIZE INBRED LINE MUTANT

作　　者：孙丽娟[1] 蒋学皎[1] 谢锋香[1] 吴殿星[2] 祝水金[1] 陈进红[1] 

机构地区：[1]浙江大学农学系,浙江杭州310029 [2]浙江大学原子核农业科学研究所,浙江杭州310029

出　　处：《核农学报》2010年第4期668-674,共7页Journal of Nuclear Agricultural Sciences

基　　金：浙江省自然科学基金项目(Y305168)

摘　　要：利用玉米自交系低植酸突变体及其野生型,通过田间试验与营养液培养试验研究了玉米低植酸突变体的主要生物学特性及光合速率。结果表明,与对应的野生型相比,突变体的播种-抽雄与播种-吐丝时间均有延长,叶面积变小,地上部与地下部生物量减少,根冠比提高,叶绿素计读数值SPAD降低,但净光合速率增加。同时,本文还针对玉米低植酸突变体的生物学特性,提出了低植酸玉米育种改良与利用的对策建议。In this paper,the main biological characteristics and photosynthetic rate of low-phytic acid（LPA） maize mutant and its wildtype were compared through field experiment and nutrient solution culture experiment respectively.The results showed that,compared with wildtype,many changes had taken place in low phytic acid maize mutant.For example,the durations from seeding to tasselling and from seeding to silking were prolonged;the leaf area was diminished;the shoot and root dry matter weight were all reduced;root-shoot ratio was increased;chlorophyll SPAD value was reduced,however,the net photosynthetic rate was increased.Furthermore,the countermeasures and proposals about the breeding improvement using low-phytic acid maize were suggested according to the biological characteristics of low phytic acid maize mutant.

关 键 词：玉米 低植酸突变体 生育期 根系 根冠比 净光合速率 

分 类 号：S513[农业科学—作物学]