Research on the Characters of Heterosis of Population Photosynthesis in Different Wheat Hybrids

doi:10.3321/j.issn:1000-7091.2003.02.011

Abstract

Abstract: To clarify the characteristics of population photosynthesis of CHA wheat hybrids and their physio-logicaLbasis, a study was conducted with two CHA wheat hybrid F₁ as tested materials and Jimai 38 as control.T he main results showed that, there were obvious average heterosis ( AH) and super-controLheterosis ( SH) on the population dry weight in two CHA wheat hybrids 1F₁and 2F₁, but the heterosis of 1F₁ mainly came from the heterosis of LAI and photosynthetic potential, while the heterosis of 2F₁came from that of net assimilation rate.T he grain yields of 1F₁and 2F₁ obviously surpassed their parents and ck.Compared to their own parents, the heterosis of 1F₁and 2F₁were caused by the increase of alLthe three yield components, but their SH of yield main-ly came from the increase of kerneLweight.

Key words: Hybrid wheat, Population, Grain yield, Heterosis of photosynthesis

CLC Number:

S512.01

LI Yan ming, ZHANG Yong li, XIAO Kai. Research on the Characters of Heterosis of Population Photosynthesis in Different Wheat Hybrids[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2003, 18(2): 39-42. doi: 10.3321/j.issn:1000-7091.2003.02.011.

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