• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Australian Journal of Crop Science >Genetic analysis of some agronomic traits in flax (Linum usitatissimum L.)
【24h】

Genetic analysis of some agronomic traits in flax (Linum usitatissimum L.)

机译：亚麻（Linum usitatissimum L.）一些农艺性状的遗传分析

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A complete diallel cross using eight flax genotypes including four Iranian breeding lines and four Canadian genotypes was carried out to estimate genetic parameters for days to flowering, days to maturity, plant height, primary branches per plant, number of capsules per plant, number of seeds per capsule, seed yield per plant, 1000-seed weight, seed yield and harvest index. Analysis of variances for the studied traits indicated highly significant differences among the genotypes. Significant general combining ability (GCA), specific combining ability (SCA) and reciprocal effects revealed meaningful contributions of additive, non-additive type of gene actions and maternal influence in governing the traits. The results showed that additive gene actions had greater effects on inheritance of days to flowering, days to maturity, plant height, primary branches per plant and 1000-seed weight. However, number of capsules per plant and number of seeds per capsule were largely controlled by dominance genetic effects, whereas both additive and non-additive gene actions were important in genetic control of harvest index, seed yield per plant and seed yield. The parental lines KH124, KO37, AH92 and SE65 exhibited positive and significant GCA effect on both seed yield per plant and seed yield. Parent KO37 also had the highest negative GCA for early flowering, early maturity and plant height. A considerable heterosis was also observed for the studied traits in some cross combinations and the highest heterobeltiosis values of 64.1, 35.2, 21.6, 77.2 and 91.3% were obtained for number of capsules per plant, number of seeds per capsule, 1000-seed weight, seed yield per plant and seed yield, respectively. These results imply the potential of producing superior cultivars through selection in segregating populations or heterosis breeding, providing that the technical problems hampering economical production of hybrid seeds in flax could be overcome.
机译：使用八种亚麻基因型（包括四个伊朗育种系和四个加拿大基因型）进行了完整的二叉杂交，以估算开花天数，成熟天数，植物高度，单株初生枝，单株荚膜数，种子数的遗传参数。每粒胶囊，每株植物的种子产量，1000粒重，种子产量和收获指数。分析所研究性状的方差表明，基因型之间存在高度显着差异。显着的一般结合能力（GCA），特异性结合能力（SCA）和相互影响揭示了基因行为的加性，非加性类型和母体影响因素的有意义贡献。结果表明，加性基因作用对开花天数，成熟天数，株高，单株初生枝和1000粒重的遗传影响更大。然而，每株植物的荚膜数量和每粒种子的种子数量在很大程度上受到优势遗传效应的控制，而加性和非加性基因作用在收获指数，单株种子产量和种子产量的遗传控制中都非常重要。亲本品系KH124，KO37，AH92和SE65对每株植物的种子产量和种子产量均表现出正向和显着的GCA效应。亲本KO37的早期开花，早期成熟和株高也具有最高的阴性GCA。在某些交叉组合中，研究性状也观察到了相当大的杂种优势，每株植物的荚膜数量，每粒种子的种子数量，1000粒重的杂种优势最高，分别为64.1％，35.2、21.6、77.2和91.3％。每棵植物的种子产量和种子产量。这些结果暗示了通过选择在隔离种群或杂种优势育种中产生优良品种的潜力，前提是可以克服妨碍经济生产亚麻籽的技术问题。

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