Volume 56 Number 1 Article 7
Year 2002 Month 1
Title: Flowering and Cross-compatibility in Apple Cultivars Growing in the Kulu Valley of India
Authors: D. Singh, S.D. Sharma, and K. Kumar
Abstract:
The time and duration, overlap in bloom period and cross-compatibility of different cultivars in the
Kullu valley of India were studied.
Flowering was 3 to 4 days earlier in 1998 than 1997. The flowering period of different apple cultivars extended between second week of March to the end April/first
week of May both years.
Flowering duration ranged from 10 to 15 days in 1997, and 9 to 17 days in
1998. The full bloom period of most cultivars synchronized with the pollinizing cultivars viz.
Jonathan,
Black Ben Davis, Red Gold and commercial.
The pollinizers 'Jonathan', 'Black Ben Davis', 'Red Gold'
and 'Commercial' are compatible with most of the commercial cultivars as revealed from completion
of in vitro pollen tube growth 72 to 120 h after pollination.
The pollinizer Malus robusta and 'Golden Delicious' did not synchronize in bloom with main cultivars.
M. robusta flowered two weeks and 'Golden Delicious' one week earlier than most cultivars.
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