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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Improving post-rainy season sorghum productivity in medium soils: doesTI Improving post-rainy season sorghum productivity in medium soils: does ideotype breeding hold a clue?
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Improving post-rainy season sorghum productivity in medium soils: doesTI Improving post-rainy season sorghum productivity in medium soils: does ideotype breeding hold a clue?

机译：提高中等土壤雨季高粱生产力：TI是否提高中等土壤雨季高粱生产力：表型育种是否有线索？

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摘要

Improvement in post-rainy sorghum grain yield has been a challenge with M 35-1, a landrace selection released in 1937 dominating the post-rainy (rabi) tracts. It led to stagnation of post-rainy sorghum yields until the importance of specific adaptation was realized in lieu of highly variable soil and climatic conditions of post-rainy growing regions. As a result, Phule Maulee and of late Phule Chitra were released for regions of Maharashtra with medium soil depth. These varieties were compared with M 35-1 in medium soil depth under receding soil moisture conditions for grain attributes and physiological traits in order to define a crop ideotype that is suitable for such regions, which will further facilitate rapid breeding process. On evaluation of these three varieties (Phule Maulee, Phule Chitra and M 35-1) along with 13 other varieties for three consecutive years, from 2006 07 to 2008-09 in medium soils, it was found that when compared to M 35-1, double the grain yield can be obtained by selecting for double the per day grain productivity, 50% higher biomass and per day fodder productivity, harvest index above 30, 5-10% more earhead emergence, 5% bolder seed, 5% higher relative water content. These traits can lead to the development of new varieties suitable for medium soil situations. Apart from high panicle dry matter (50% of total dry matter), these varieties should also have efficiency in conversion of photosynthates to the grain.
机译：雨后高粱谷物产量的提高一直是M 35-1的挑战，M 35-1是1937年发布的一种地方品种选择，主导了雨后（狂犬病）地带。这导致了雨后高粱产量的停滞，直到意识到特殊适应的重要性来代替雨后生长地区的高度可变的土壤和气候条件。结果，在中等土壤深度的马哈拉施特拉邦地区释放了普勒毛雷和后来的普勒奇特拉。将这些品种与土壤湿度下降的中等土壤深度的M 35-1进行比较，以了解谷物的属性和生理特性，从而确定适合于此类地区的作物表型，这将进一步促进快速育种过程。在2006-07年至2008-09年期间，在中等土壤中连续三年对这三个变种（Phule Maulee，Phule Chitra和M 35-1）以及其他13个变种进行评估，发现与M 35-1相比，将每天的谷物产量提高一倍，将生物量和每天的饲料生产率提高50％，将收获指数提高至30以上，将耳朵的出苗率提高5-10％，将种子变大5％，将相对产量提高5％，即可使谷物产量提高一倍含水量。这些特性可以导致开发适合中等土壤条件的新品种。除高穗干物质（占总干物质的50％）外，这些品种还应具有将光合产物转化为谷物的效率。

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