ISHS Acta Horticulturae 283: IV International Symposium on Plum and Prune Genetics, Breeding and Pomology
PROBLEMS OF POLLINATION AND FERTILISATION IN PLUM |
| Authors: | G.S. Bajwa, A.S. Bindra, J.S. Bal, P.P.S. Minhas |
| Abstract:
Some types of plums grow commercially in the submontane plains of North West India. The region is marked by an extreme summer temperature reaching 45°C (even more) and very low relative humidity that is abruptly changed in first week of July by arrival of cool monsoon rains. In winter the night temperatures may touch 0°C with occasional ground frosts. Plants get 250 to 300 chilling hours. Kala Amritsar is the most widely grown cultivar. It is self-fruitful but in controlled pollination studies its yield improved upto 23 per cent when pollinated with Titron. Kataru Chak is partially self-fruitful cultivar but the yield improved upto 13 per cent, if pollinated with Kala Amritsar. Plum cultivars flower from last week of February to first week of March. Pollen viability and germinability ranged from 30 to 90 per cent and 30 to 70 per cent respectively in different cultivars. The stigma become receptive one day before anthesis and remained so till three days after. | |
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