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Gearing Up New Generation Cotton for Climate Change

机译:为应对气候变化而准备新一代棉花

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Cotton, a major source of natural fibre, contributes over 62% to the requirements of the country's textile industry. Though cotton in India has registered impressive growth in productivity and production since the advent of hybrid technology and transgenes against bollworm complex, the realizable productivity level is still quite low as compared to that of other major cotton growing countries in the world. Its future would depend on how effectively and speedily we address the already existing and emerging problems, especially the changing climate. Mitigation of the causalfactors and adaptation of the crop to suit changing climate are the two broad strategies to restrain and cope with the changing climate. Whereas mitigation strategy aims at reducingthe emission of C0_2 and other greenhouse gases into the atmosphere, adaptation strategy aims at enabling the cotton plant to perform well under the changing climatic conditions by cultural and genetic strategies. Choice of variety, varying planting date, optimization of water use, manipulation of crop maturity, optimization of crop nutrition and employing responsive pest and disease management strategies will help in adapting cotton to suit the changing climate. For many farmers, Bt cotton is provingto be a valuable tool for integrated pest management programmes by giving an alternate choice for pest control. Attempts to engineer crops to perform better under the conditions of increasing environmental stress associated with increased C0_2 exposure,temperature, and changing precipitation patterns and drought should be considered on top priority. While placing emphasis on development of future cotton armed with means to cope with the changing climate, it is important to explore the possibilities ofraising the ceiling to genetic yield level progressively, no matter what strategy is contemplated. Biotechnology should be used to improve variety selection and screening strategies in conventional breeding programmes to identify and source new variations ingermplasm and wild races and to understand the genes and proteins controlling plant responses. No doubt, climate change will be an accepted reality while science and technology with advances in breeding and biotechnology willfacilitate the targeted production during the changed climatic scenario with consumption of less fuel, less water, fewer and lesser pesticides, less herbicides, less nutrients and utilization of scarce labour force. Cotton varieties/hybrids of tomorrow should combine all the favourable GM traits to suit the changing climate and market preferences without compromising on yield and minimal inputs are discussed.
机译:棉花是天然纤维的主要来源,占该国纺织业需求的62%以上。尽管自杂交技术和转基因抗棉铃虫复合体出现以来,印度的棉花生产力和产量有了惊人的增长,但与世界上其他主要棉花种植国相比,可实现的生产力水平仍然很低。它的未来将取决于我们如何有效和迅速地解决已经存在和正在出现的问题,尤其是不断变化的气候。缓解因果关系和适应气候变化的作物适应是抑制和应对气候变化的两种主要策略。缓解策略旨在减少向大气中排放CO 2和其他温室气体,而适应策略则旨在通过文化和遗传策略使棉花植物在不断变化的气候条件下表现良好。选择品种,改变播种日期,优化用水,控制作物成熟度,优化作物营养以及采用响应性病虫害和疾病管理策略,将有助于使棉花适应气候变化。对于许多棉农而言,Bt棉花被证明是有害生物综合治理计划的宝贵工具,它为害虫防治提供了另一种选择。在与CO 2暴露,温度升高以及降雨模式和干旱变化有关的环境压力增加的条件下,试图使农作物工程更好地表现。在强调发展未来棉花以应对气候变化的手段的同时,重要的是探索无论考虑采用何种策略,逐步将上限提高到遗传产量水平的可能性。在常规育种计划中,应使用生物技术来改善品种选择和筛选策略,以识别和寻找新的变种核质和野生种,并了解控制植物反应的基因和蛋白质。毫无疑问,气候变化将是公认的现实,而随着育种和生物技术的进步,科学技术将在气候变化的情况下促进目标生产,从而减少燃料,水,农药的用量,除草剂的用量,养分和营养的消耗劳动力稀缺。明天的棉花品种/杂种应结合所有有利的转基因特性,以适应不断变化的气候和市场偏好,同时又不影响产量,并讨论了最少的投入。

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