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  1. Vol. 8 No. 4, p. 487-490
     
    Received: Feb 29, 1968
    Published: July, 1968


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doi:10.2135/cropsci1968.0011183X000800040028x

Pollen Production and Pollen Shedding of Hard Red Spring (Triticum aestivum L. em Thell.) and Durum (T. durum Desf.) Wheats1

  1. L. R. Joppa2,
  2. F. H. McNeal3 and
  3. M. A. Berg3

Abstract

Abstract

We have investigated the relative pollen-shedding abilities of 11 hard red spring and 3 durum wheat varieties and the relationships between pollen-shedding and other varietal characteristics.

The varieties differed in amount of pollen shed, number of pollen grains/anther, percent anthers extruded, tillers/plot, fertile florets/plot, fertile florets/tiller, yield, and kernel weight. Anther extrusion varied from 72% for ‘Thatcher’ spring wheat to 22% for ‘Lakota’ durum wheat. Number of pollen grains/anther varied from 3,867 for ‘Rescue’ to 2,687 for ‘Fortuna’ spring wheat.

The amount of pollen shed was positively correlated with percent anthers extruded and tillers/plot but negatively correlated with fertile florets/tiller. Path coefficient analysis indicated that percent anther extrusion had the largest direct effect on pollen shedding. Pollen shedding ability of a variety was predicted on the basis of percent anther extrusion, pollen grains/anther and fertile florets/plot.

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