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This article in CS

  1. Vol. 19 No. 1, p. 128-130
     
    Received: Mar 10, 1978


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doi:10.2135/cropsci1979.0011183X001900010035x

Seedling Photosynthetic Efficiency of a Grain Sorghum Hybrid and Its Parents1

  1. G. F. Arkin and
  2. R. L. Monk2

Abstract

Abstract

Seedlings of a hybrid and its parents of Sorghum bicolor (L.) Moench were examined from emergence through the four leaf stage for photosynthetic efficiency. Seedling root components were included in the analysis. Significant heterosis occurred for leaf area, total dry weight, and for rate of development, but significant heterosis was not exhibited for root/shoot ratios, net assimilation rate (NAR), or total dry matter/leaf area ratios. These results indicate that heterosis is not present for photosynthetic efficiency as measured by NAR in these hybrid sorghum seedlings.

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