Plant Physiol.
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Plant Physiology 59:1136-1140 (1977)
© 1977 American Society of Plant Biologists

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Articles

Studies on the Behavior of the Senescence Signal in Anoka Soybeans 1

Susan J. Lindoo2 and Larry D. Noodén

a Department of Botany, University of Michigan, Ann Arbor, Michigan 48109

Soybean, a monocarpic plant, has been found to undergo rapid senescence as its fruits mature. In soybeans (Glycine max[L.] Merrill) cv. Anoka, foliar senescence begins during the period of most rapid pod-fill (seed growth), and it can be eliminated by surgical removal of the seeds at an early stage of their growth. Experiments in which fruits are removed from some regions of the plant but allowed to remain on other regions have established that the transmission of the senescence signal is limited; it affects mainly those leaves nearest to the nodes bearing the fruits. The implications of this localized signal movement are discussed.

2 Present address: Dept. of Range Science, College of Natural Resources, Utah State University, Logan, Utah 84322.

1 Supported in part by Research Grant 416-15-79 from the USDA Cooperative State Research Service under PL 89-106.




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L. D. NOODEN, G. M. KAHANAK, and Y. OKATAN
Prevention of Monocarpic Senescence in Soybeans with Auxin and Cytokinin: An Antidote for Self-Destruction
Science, November 16, 1979; 206(4420): 841 - 843.
[Abstract] [PDF]


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Copyright © 1977 by the American Society of Plant Biologists