玉米雄性不育系双168ms的选育研究

用回交转育法将玉米自交系WN11转育成为双型雄性不育系双168ms.通过田间直观性状鉴定和显微镜下镜检,均表明双168ms的雄花不育性及其稳定性是可靠的.用自交选育法结合测交育性鉴定,选育出双型雄性不育的恢复系西18,用其与双168ms杂交,杂种一代雄花散粉能力达到100%.布点试验结果表明,双168ms×西18与普通胞质的同组合杂交种比,其籽粒产量均稍有增加.因此,西农11号的双型雄性不育化杂交种可以在生产上推广利用.

Breeding of Shuang 168ms Male Sterile Line of Maize

WN 11 inbred line of maize w as breeded Shuang 168^ms male sterile line of Shuang-cyt oplasmic with method of back crossing.Estimated traits of field and scaned on microscope indicated that the male sterility of pollen and the stability of Shuang 168^ms of maize is reliable.Xi18 male fertile line of Shuang-cyt oplasmic of maize which were breeded with the method inbreded and estimated fruitf ulness of tested crossing,crossed from male sterile of Shuang 168^ms and Xi18 restorer,the degree of rest oration of male fertile of F₁ is 100 percent.The test in several locations indicated that Shuang 168^ms×Xi18 single cross hybred was compared with its hybred of same combination of normal cytoplasmic,and its grain yield has a little increase.In this way,It is possible that The Xinong 11 hybrid of male sterility in Shuang-cyt oplasmic can be used in corn prodution.