四川农业大学学报 ›› 1995, Vol. 13 ›› Issue (02): 154-157,160.doi: 10.16036/j.issn.1000-2650.1995.02.008

• 研究论文 • 上一篇    下一篇

玉米幼苗根系吸收硫酸盐(Na235SO4)效率与产量杂种优势的关系

冯宗云, 高之仁, 荣廷昭   

  1. 四川农业大学数量遗传研究室, 雅安市 625014
  • 收稿日期:1994-07-12 出版日期:1995-06-30 发布日期:2017-04-22

THE RELATIONSHIP BETWEEN YIELD HETEROSIS AND SULFATE UPTAKE EFFICIENCY BY SEEDLING IN MAIZE (Zea mays L.)

Feng Zongyun, et al   

  1. Laboratory of Quantitative Genetics Sichuan Agricultural University, Yaan, Sichuan, China 625014
  • Received:1994-07-12 Online:1995-06-30 Published:2017-04-22

摘要: 本文以来源不同的9个自交系及其按双列杂交组成的36个正交F1组合为材料,研究了玉米幼苗根系吸收硫酸盐(Na235SO4)的动力学参数(Km和Vmax)与产量杂种优势(H)的关系。结果表明,Vmax与H无明显的数量关系,Km与H间呈显著的直线相关(r=-0.3331,P<0.05)。Km可作为早期预测产量杂种优势的一个生理参考指标。

关键词: 玉米, 硫酸盐吸收, 杂种优势, 相关, 配合力

Abstract: The present paper is concerned in the relationship between yield heterosis (H) and the kinetic parameters(Km and Vmax) of sulfate uptake (Na235SO4)by seedling roots in maize,The data used in analysis came from an experiment involving 9 inbred lines and their 36 single crosses in a diallel mating design without reciprocals.The results showed that (l) sulfate uptake capacity has significant difference among genotypes in maize and generally higher heterosis; (2) a significant linear regressive relationship between Km and H was found (Ŷ=157.78-0.32x), but no obvious relation of Vmax with H was observed.Km was considered as a physiological indice for reference which predicted the performance of hybrids the during phase earlier growth.

Key words: MAIZE, SULFATE UPTAKE, HETEROSIS, CORRELATIONS, COMBINING ABILITY

中图分类号: 

  • S513