| 玉米幼苗根系吸收硫酸盐(Na_2~(35)SO_4)效率与产量杂种优势的关系 |
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| 引用本文： | 冯宗云,高之仁,荣廷昭.玉米幼苗根系吸收硫酸盐(Na_2~(35)SO_4)效率与产量杂种优势的关系[J].四川农业大学学报,1995(2). |
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| 作者姓名： | 冯宗云 高之仁 荣廷昭 |
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| 作者单位： | 四川农业大学数量遗传研究室!雅安市625014 |
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| 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（Ｎａ３５２ＳＯ４）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。
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| 关 键 词： | 玉米(45CJ49EJ) 硫酸盐吸收 杂种优势 相关(30Q31FE32A) 配合力(45CG) |
THE RELATIONSHIP BETWEEN YIELD HETEROSIS AND SULFATE UPTAKE EFFICIENCY BY SEEDLING IN MAIZE (Zea mays L) |
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| Feng Zhongyun et al.THE RELATIONSHIP BETWEEN YIELD HETEROSIS AND SULFATE UPTAKE EFFICIENCY BY SEEDLING IN MAIZE (Zea mays L)[J].Journal of Sichuan Agricultural University,1995(2). |
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| Authors: | Feng Zhongyun |
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| Abstract: | The present Faier is concerned in the relationship between yield heterosis is (H) and the kinetic parameters(Km and Vmax) of sulfate uptake (Na352SO4)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 sinificant linear regressive relationship between Km and H was found (Y=157. 78-0. 32x) , but no obvious relation of Vmax with H was observed.Km was considered as a physiological indice for refrerence which predicted the performance of hybrids the dur ing phase earlier growth. |
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| Keywords: | MAIZE SULFATE UPTAKE HETEROSIS CORRELATIONS COMBINING ABILITY |
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