欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (18): 35-40.

所属专题： 小麦

• 农学 农业基础科学 • 上一篇    下一篇

六倍体饲草型小黑麦株高形成特点

殷稳娜 王雪玉 高静涛 何萱 孔广超   

  • 收稿日期:2011-03-28 修回日期:2011-04-07 出版日期:2011-07-25 发布日期:2011-07-25
  • 基金资助:

    兵团科技局重点项目;石河子大学高层次人才项目

Plant Height Characteristics of Hexaploid Triticale (× Triticosecale Wittmack) for Forage

  • Received:2011-03-28 Revised:2011-04-07 Online:2011-07-25 Published:2011-07-25

PDF (PC)

907

摘要：

为探索六倍体饲草型小黑麦株高形成特点、明确其株高形成基本规律，以两种类型共6个六倍体小黑麦基因型为试验材料，对其株高、各节间长、株高构成指数、株高形成动态及其对外源赤霉素反应特性等进行了研究。结果表明：六倍体饲草型小黑麦的株高极显著高于兼用型小黑麦，其差异主要由于上部节间长度导致，各节间长中L1对株高的直接贡献最大，L2次之。两种类型小黑麦的株高构成指数间无显著差异。株高形成的动态表明饲草型小黑麦的株高形成最快时期较兼用型晚10天左右。饲草型小黑麦株高对外源赤霉素的敏感性较兼用型小黑麦敏感，且以抽穗期较拔节期更敏感。可见两种类型六倍体小黑麦在株高形成特点具有较大差异，这对饲草型小黑麦的栽培技术制定具有一定的指导意义。

关键词: 紫云英和稻草还田, 紫云英和稻草还田, 免耕抛栽, 土壤肥力, 水稻产量

Abstract:

To explore the characteristics of hexoploid triticale (×Triticosecale Wittmack) for forage and understand their basic development rule, two types’ six hexaploid triticale genotypes were used to investigate their plant heights, lengths of inter-nodes, plant height components and dynamic changes of plant height, and the reaction of triticale plant height to GA3 were studied in 5 concentrations and at 2 development stages. The results showed that the plant heights of triticale varieties for forage were significant higher than triticale genotypes for food or feed. And the difference of height is mainly due to the length of upper inter-nodes. The plant height was significantly positive correlation with plant height component factors, length of inter-nodes L1 and L2 contributes more to triticale plant-height. No significant difference of plant height components indexes were found between the two types of triticale. The dynamic changes of triticale height indicated that the max development speed of forage triticale about 10 days later than the dual types. GA3 enhanced the plant height development more for forage triticale and the sensitivity was more at heading stages than at shooting stage. These results will supply some theory bases for forage triticale cultivation.