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An induced mutant with extended vegetative phase in stem nodulating Sesbania rostrata

Published online by Cambridge University Press:  27 March 2009

D. C. Joshua  and
S. Ramani
D. C. Joshua
Affiliation:
Nuclear Agriculture Division, Bhabha Atomic Research Centre, Trombay, Bombay—400 085, India
S. Ramani
Affiliation:
Nuclear Agriculture Division, Bhabha Atomic Research Centre, Trombay, Bombay—400 085, India
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Summary

The flowering response of a late-flowering mutant of Sesbania rostrata was compared with that of the parent plants by sowing it on ten different dates, from December 1990 to September 1991, in India. Flowering response was also studied following exposure to an 8-h photoperiod at four different stages of growth. The parent flowered at different times of the year depending on the time of sowing, while the mutant flowered only during October–November irrespective of sowing date. The parent was sensitive to a short-day photoperiod as early as 15 days after sowing, but the mutant became sensitive to the critical photoperiod only after 60 days of vegetative growth. The mutant, by virtue of its longer vegetative phase, had the potential to produce adequate phytomass irrespective of the time of sowing.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 120 , Issue 1 , February 1993 , pp. 71 - 73
Copyright
Copyright © Cambridge University Press 1993

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References

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