ISSN:
1432-2048
Keywords:
Apical senescence
;
Pisum
;
Photomorphogenesis
;
Grafting
;
Growth regulators
;
Senescence
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Apical senescence in an early flowering line of pea, G2, is greatly delayed by short days. This behavior is controlled by two dominant genes. Apical senescence of ungrafted, insensitive (I) lines is unaffected by photoperiod. When I-type scions with one of the two required genes were grafted onto G2, apical senescence of the I-type was delayed in short days, but not in long days. Flowering of the I-type was unaffected. The apex of the G2 stock was unaffected as well. Apical senescence of an I-type line lacking both photoperiod genes was not delayed when grafted on G2 in short days. It is concluded that G2 plants grown in short days produce a graft-transmissible factor which delays apical senescence of photoperiodically insensitive lines.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00387982
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