| 曹阳，严玉萍，冯振秀，朱波.棉花F1性状与亲本关系分析[J].广东农业科学,2014,41(4):28-31 |
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棉花F1性状与亲本关系分析 |
| Analysis on relationship of cotton traitsbetween F1 hybrid and parents |
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| DOI： |
| 中文关键词: 杂交棉 亲本 优势 选育 |
| 英文关键词: hybrid cotton parent advantage breeding |
| 基金项目:“十二五”新疆生产建设兵团重点领域科技攻关
项目（2011BA001）；新疆生产建设兵团青年创新基金(2011CB001) |
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| 摘要点击次数: 1321 |
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| 中文摘要: |
| 从36 个F1优势组合中筛选出强优势组合，将P1、P2、F1 随机区组排列，3 次重复，生育期内测定植株性
状、黄萎病、产量构成要素及品质变化。通过对杂交棉强优势组合子一代与亲代间优势关系分析，揭示杂种一代变化
趋势。结果表明院杂种一代与两亲本相比，株高、果枝数超过高值亲本Y5-1，生育期与早熟亲本一致，果枝始节位、第
一果枝高接近两亲本均值；抗病能力超过病重亲本，但低于病轻亲本；铃重极显著高于双亲，籽皮棉产量均表现出明
显的正向中亲优势和超亲优势，优势分别达到76.6%、25.4%。品质性状中，没有表现出超亲优势，纤维长度和成熟度
指数与高值亲本P2相同，其余性状数值都接近于中亲值。指出种质创新、选择在杂优利用中的重要作用，同时应根据
新疆实际情况加强对杂交二代的选育研究。 |
| 英文摘要: |
| Screening out strong heterosis combinations from 36 F1 combinations, with P1, P2, F1 in randomized block,
repeated 3 times, plant traits, Verticillium wilt, yield components and quality changes of cotton in growth period were
determined. By analysis on heterosis relationship between F1 hybrid cotton and their parents, the change trend of F1 was
revealed. The results showed that, compared to parents, plant heights and number of fruit branches of F1 hybrid exceeded
the high value parent Y5-1; the growth period was consistent with the early parent; high nods order of fruits and height of
first fruit branches were close to the mean values of two parents; disease resistance was over the seriously ill parent, but
lower than the parent of mild disease; weight of cotton bolls was significantly greater than parents; seed cotton yield showed
obvious positive mid-parent heterosis and transgressive heterosis, their strengths were 76.6% and 25.4%, respectively. In
quality traits, those hybrids showed no signs of transgressive heterosis; fiber length and maturity index were as the same as
P2, the other traits were close to the value of mid-parents. The research indicated that hybrid and selection play important
role in heterosis ultilization, and according to Xinjiang actual situation, more research should be done in the future, to
enhance the F2 hybrid breeding research. |
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