A possible gene source for early, day-length neutral pigeon peas,Cajanus cajan(L.) Millsp.
✍ Scribed by R. P. Ariyanayagam; J. A. Spence
- Publisher
- Springer
- Year
- 1978
- Tongue
- English
- Weight
- 306 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0014-2336
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✦ Synopsis
Atylosh~ scarabaeoides BENTH. and A. platycarpa BENTH., close relatives of the species Cajanus cajan (L.) MILLSP., were screened for photoperiodic response. Four photoperiods ranging from 12 h 45 min to 19 h were studied in three environments. A. scarabaeoides flowered freely only in the first photoperiod. A. platycarpa not only flowered early (39 to 63 days after planting) in all four photoperiods, but also exhibited a relatively constant vegetative phase up to 16 h of illumination.
Cajanus cajan, in which most cultivars -if not all exhibit a response to photoperiod, was successfully hybridized with the two Atylosia species. It is suggested that genes for earliness and insensitivity to day-length could be transferred from A. platycarpa to C. cajan.