摘要
棉花柱头外露种质主要来源于陆地棉和海岛棉种间杂交后代 ,它受两对隐性基因控制 ,自交或异交都能结实 ,在棉花杂种优势利用中具有应用潜力 ,到目前为止 ,已转育成四个柱头外露系。棉花柱头外露种质的生物学特性表现出远缘种后代的多样性。株高可分为矮杆和中杆 ;叶形有鸡爪叶和掌状叶 ;花器形态表现出蕾期花蕾有一小孔、花柱异长、花色多样、种子大小不一 ;其发育特性集中表现为种质的感光性、感温性和基本营养生长期 ;主要产量性状中霜前皮棉产量超高优势的幅度为 - 2 8.8%～ 13.17% ,平均为 - 3.0 6 %。
The cotton germplasm with stigma showing was mainly bred from the generation of interspecific hybridization of Gosspium barbadense and Gosspium hirsutum. Controlled by two pairs of duplicate recessive gene, this germplasm with stigma showing is fertile in self-pollination and cross-pollination .The application to heterosis in cotton breeding is potential. Hitherto, 4 kinds of stable cotton lines with stigma showing have been transbred. The cotton germplasm with stigma showing showed the same polytypism in biodiversity as the progeny of distant hybridization. They could be divided into dwarf and regular form, according to plant height, and could be divided into chicken claw leaf and palmer leaf according to lobiform. Floral organ's morphogensis showed a hole on the top of alabastrum, heterostylism, varied seeds and varied floral color. Characters of auxesis on this cotton focus on photonasty, thermoperiodicity and basic vegetation growth phase. Among of the main traits on yield showed that the heterosis were obvious for the pre-frost lint cotton yield, the range of high parent heterosis were -28.88%～13.17% with average value -0.36%.
出处
《江西农业大学学报》
CAS
CSCD
2002年第1期10-13,共4页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家自然科学基金资助项目 (39996 0 0 4 2 )
江西省自然科学基金资助项目 (9830 0 9)
