Effect of Nonpollination of First or Second Ears of Nonprolific and Prolific Maize Hybrids1
- C. L. Prior and
- W. A. Russell2
Three types of maize (Zea mays L.) single-cross hybrids were compared for flexibility to transfer grain development between first and second ears when pollination was prevented on one of the ears. The three types, with seven crosses/type, were: nonprolific, prolific, and elite-prolific. When pollination of the first ear was prevented, grain production of second ears was increased, but yield losses relative to the controls were: nonprolific (85.5%), prolific (39.4%), and elite-prolific (27.5%). When pollination of the second ear was prevented, yield changes relative to the controls were: nonprolific (+1.4%), prolific (−13.5%), and elite-prolific (−10.2%). Evidently, flexibility was much greater in the prolifics than the nonprolifics, but considerable variation was observed among hybrids of a type.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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