Characteristics and Performance of Male-Sterile and Hybrid Seed Produced by Cross-Pollination in Hard Red Spring Wheat1
- K. M. Johnson and
- K. A. Lucken2
Wheat(Triticum aestivum L.) seed produced by cross-pollination on male-sterile plants in male-sterile increase and hybrid seed production blocks was characterized and evaluated using several laboratory and field tests. Male steriles (A-lines) in both types of crossing blocks had lower seed sets and lower seed yields than their pollinators (maintainers or B-lines and restorers or R-lines). Seed produced by cross-pollination on A-lines had lower test weight, lower germination percentage and less seedling growth, but higher seed weight, higher protein percentage, and higher leachate conductivity than selfed seed produced on their respective B- or R-lines. The crossed seed germinated and grew more slowly under osmotic stress than selfed seed but showed no germination differences after exposure to high and low temperature stresses.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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