南疆棉区棉花品种的特性演变与育种潜力研究
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农作物分子标记辅助选择和聚合育种技术


tudy on the Species EvolutionCharacter and Selecting of Breeding Potential in Cotton Regions of Southern Xinjiang
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    摘要:

    南疆棉区经过5次大的品种更换,高产品种的选育起了非常重要的作用,新育成的品种比早期育成的品种产量以每年12.1kg.hm-2的速度增长,品种改良对产量的贡献率为43.9%。衣分、单株结铃数和单铃重的总的演变趋势是增加的,农艺性状方面株高降底,增加株宽,自育品种的现蕾量较低,脱落率较高,南疆棉花品种的综合品质变化不大,特别是棉花生产品质未发生根本性变化。南疆棉花品种在单株结铃数、衣分、增加现蕾数、降低花蕾脱落、株宽、果枝始节、高光合速率品种的选育以及纤维比强度等方面具备较大的选择潜力。南疆早中熟棉区品种选育过程中发扬南疆历史棉花品种在早熟、优质、大铃、适应性等优越性的同时合理利用引进品种的抗病、高衣分、高产、株型松散、结铃性强等优势拓展新疆棉花品种的遗传基础。

    Abstract:

    The southern of Xinjiang has experienced the Replacement of 5 times, the breeding of high yield varieties has played an important role, compared with the early vareties,new varieties are increasing with the velocity of 12.1kg/ha per year,. To production ,the Contribution of Improved varieties is 43.9%.The total tedency of evolve in lint percentage, per plant boll number and weight is increasing In agriculture Characteristic , the per plant height drop , width increase , the reproduction quantity of self-breeding varieties was lower, loss rate is higher, the composite quality in southern of Xinjiang has less change, especially the producing quality of cotton has not undergo a Fundamental change.There are larger selecting potential of southern Xinjiang's cotton in these facets : per plant ball numbers , increase flowers , cut down the falling rate , plant width,first branch , selection of high photosynthesis varieties and fiber strength . In the early ripening cotton variety breeding process in South Xinjiang cotton varieties in the early history of development, high-quality, big ball, adaptability of superiority and rational utilization of introduced varieties of disease resistance, high yield, plant type, grade, loose culture is strong wait for an advantage to expand the genetic basis of cotton varieties in Xinjiang.

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吐尔逊江,李雪源,田长彦,等.南疆棉区棉花品种的特性演变与育种潜力研究[J].植物遗传资源学报,2012,13(4):535-541.

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历史
  • 收稿日期:2011-07-01
  • 最后修改日期:2012-05-27
  • 录用日期:2012-05-10
  • 在线发布日期: 2012-06-27
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