正常叶与鸡脚叶杂交棉光合和叶绿素荧光参数的比较  

Comparative Studies on the Photosynthetic Characteristics and Chlorophyll Fluorescence Parameters with Okra-leaf and Normal-leaf Hybrid Cotton Cultivars

作　　者：马宗斌[1] 李伶俐[1] 房卫平[2] 谢德意[2] 

机构地区：[1]河南农业大学农学院,450002 [2]河南省农业科学院棉花油料作物研究所,450002

出　　处：《棉花学报》2006年第3期150-154,共5页Cotton Science

基　　金：河南省杰出人才创新基金(0321001600);河南省科技攻关项目(0424020023)

摘　　要：在大田栽培条件下,研究比较了正常叶和鸡脚叶两种叶型杂交棉的叶片光合特性和叶绿素荧光参数。结果表明,正常叶品种在开花后以及结铃期白天各个时段的叶片光合速率(Pn)均高于鸡脚叶品种。主要原因是正常叶品种开花期叶片E和Cs较大;吐絮后叶片SPAD值和ФPSⅡ较高,E和Cs又较低。而且在结铃期的白天,叶片的E、Cs和Fv/Fm、φPSⅡ较高,有利于维持较高的叶片Pn。因此,棉株有机营养供应较为充足,单株结铃较多,铃重较大,子棉和皮棉产量均高于鸡脚叶品种。其中,豫杂35比标杂A2、标杂A1皮棉产量分别增加10.5%、14.2%;中棉所29比标杂A2、标杂A1分别增加2.4%、5.8%。The photosynthetic characteristics and chlorophyll fluorescence parameters of four commercial hybrid cotton cultivars with normal-leaf and okra-leaf were studied in field. The results showed that the leaves of normal-leaf hybrid cotton cultivars indicated a higher photosynthetic rate（Pn ） after the flowering stage then during the daytime of bolls setting stage were compared with okra-leaf cotton. The main reasons were that the leaves of normal-leaf hybrid cotton cuhivars indicated higher E, Cs at the flowering stage, higher SPAD value,φPSⅡ and lower E,Cs after the bolls opening stage, and higher E,Cs and Fv/Fm,φPSⅡ during the daytime of bolls setting stage. These were of benefit to enhance the Pn. Therefore, normal-leaf hybrid cotton cultivars can get more organic nutrition and produce bigger bolls and more boll number per plant, and both of seed cotton and lint yield were increased. Compared with Biaoza A2 and Biaoza A1 ,the lint yield of Yuza 35 were increased by 10.5%. 14.2% ,and CCRI 29 were increased by 2.4%, 5.8%, respectively.

关 键 词：杂交棉 正常叶 鸡脚叶 光合特性 叶绿素荧光参数 

分 类 号：S562[农业科学—作物学]