Variability in seed germinability in low chill plum cultivars
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Date
2006-07
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
The present study was conducted on five cultivars of low-chill plum (Prunus salicina L.) viz., Alucha Black, Fla 1-2, Howe, Late Yellow and Titron. These cultivars were evaluated for their characteristics fruit growth pattern and different seed and germination attributes i.e. seed length, seed diameter, seed weight, percentage seed germination, days taken for radicle emergence, survival percentage, fresh weight of shoot and root and dry weight of shoot and root. Different physical characters of fruits i.e. fruit length, weight, diameter, volume and specific gravity were recorded from petal fall stage till harvest stage at weekly interval. Fully matured and ripened fruits were defleshed by smashing and washing the fruits in running water to obtain stones. The seeds were extracted from stones by breaking with the help of small hammer. The seeds were stratified and germinated and were sown in iron trays filled with sand : soil : FYM (1:1:1). It was found that there existed some kind and extent of variation for seed germinability within different cultivars. In different plum cultivars germination percentage varied from 1.00 to 26.75 and fruit maturation time varied from 66 days to 88 days. The fruit growth studies in all the cultivars exhibited a double sigmoidal growth curve when different physical characters of fruit were plotted as a function of times out of the five plum cultivars evaluated Late Yellow took minimum number of days (18.59) for radicle emergence and showed germination percentage (66) and survival percentage (66.25) under field conditions and can be suggested for use as rootstock on the basis of its high survival ability.
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