Madras Agricultural Journal
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POLLEN BIOLOGY IN JACK (ARTOCARPUS HETEROPHYLLUS LAM.)

Abstract

Pollen studies in Jack conducted at the College of Horticulture, K.A.U. revealed that pollen production is abundant in jack and ranged from 1,50,00,000 to 1,70,00,000 per catkin. The percentages pollen fertility ranged from 89 to 93 and the pollen diameter ranged form 16 to 22u. Ten per cent sucrose and one per cent agar found to be the best germinating media for jack pollen. The storage longevity was very low under room temperature and the viability was lost completely within 24 hours. 'Varikka' and 'Koozha' types did not differ significantly with regard to pollen diameter, fertility and viability.

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