棉花学报   Cotton Science  2006，18(1)：32～36

 

Comparison of Characters between Obverse Cross and Inverse Cross of Insectresistance Hybrid Cotton of F1 Population
WANG Ren-xiang1，ZHOU Zhong-hua2，CHEN Jin-xiang2，LU Han3
(1. Hunan Biological and Electromechanical Polytechnic， Changsha 410127，China； 2.Insititute of Cotton， Hunan Agricultural University，Changsha 410128，China；3.Hunan Agricultural Sci. & Tech. Sevice Center，Changsha 410005，China)

Abstract：According method of incomplete dial cross，A1，A2，A3，A4，A5，and A6，altogether six insect-resistance cultivars were used as male parents，B7，B8，B9，B10，B11，and B12， six cultivars were used as female parents，36 obverse cross were obtained； while 36 inverse cross were obtained used A series as female and B series as male parents. Comparison study on yield， fiber quality and insect-resistance was carried out in four trial spots，respectively，from Changsha city，Ningxiang county，Nanxian county and Lixian county of Hunan Province. The results are as followed：There are not prominent difference between fiber quality of obverse cross and inverse cross，showed that fiber quality maybe is not controlled by cytoplasm. Not only seed cotton yield， but also lint yield between obverse cross and inverse cross，the difference was prominent at 0.01 level，furthermore，among all factors effect yield，there are prominent difference between average weight of boll of obverse cross and inverse cross at 0.05 level. Insect-resistance of obverse cross is better than that of inverse cross；there are prominent difference between resistance on the forth insect of obverse cross and inverse cross at 0.01 level.
Key words：insect-resistance hybrid cotton；fiber quality；yield；insect-resistance；obverse cross； inverse cross；t test of paired samples      [Full Text, 1889KB]