...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Crop Research >Cultivar differences for date of maturity and their effects on physiological growth parameters and grain yield in durum wheat.
【24h】

Cultivar differences for date of maturity and their effects on physiological growth parameters and grain yield in durum wheat.

机译：硬粒小麦成熟期的品种差异及其对生理生长参数和籽​​粒产量的影响。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Twenty-one selected durum wheat genotypes, by classifying them into three maturity groups i. e. early, midlate and late, were studied to know the effects of differences in maturity time on physiological growth parameters and grain yield. The mean values showed significant differences among the genotypes for all the characters. The Kiwi's' of early group had the shortest vegetative and the longest grain filling periods, whereas midlate group variety HI 8498 was superior in grain yield per plant. The mean expression of maturity groups indicated the reduction in days to ear emergence, days to maturity, vegetative period, grain filling period and grain yield per plant with the increase in earliness (late group through early group). Reverse was true for 100-grain weight and grain filling index. Differences in maturity time also affected the correlation. Many unfavourable changes in magnitude and direction of correlations were observed in the early group genotypes when compared with the correlation coefficients of late group genotypes. Changes in mean performances and correlations may be due to mating system used for generating variability and tendency of plant breeders to select for more and more early types. Altering of undesirable changes should be possible by utilizing the genetic variations like Kiwi's in appropriate breeding programmes.
机译：通过将硬粒小麦的基因型分为三个成熟度组，选择了二十一种。 e。研究了早期，中晚期和晚期，以了解成熟时间差异对生理生长参数和谷物产量的影响。平均值显示所有字符的基因型之间存在显着差异。早期猕猴桃的植物营养最短，籽粒充实时间最长，而中晚期组的HI 8498的单株产量更高。成熟度组的平均表达表明，随着早熟时间的增加，从耳朵出苗到成熟的天数，到成熟的天数，营养期，籽粒充实期和单株籽粒产量都随着早熟的增加而减少。 100粒重和谷物填充指数则相反。成熟时间的差异也影响了相关性。与晚期基因型的相关系数相比，早期基因型的相关性在大小和方向上有许多不利的变化。平均性能和相关性的变化可能归因于用于产生变异性的交配系统以及植物育种者选择越来越多的早期类型的趋势。通过在适当的育种程序中利用像猕猴桃这样的遗传变异，应该可以改变不良的变化。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号