ISHS Acta Horticulturae 696: VII International Symposium on Temperate Zone Fruits in the Tropics and Subtropics - Part Two
SELECTING WALNUTS FROM SEEDLING TREE POPULATIONS IN SOME VILLAGES OF DISTRICT SIRMOUR (H.P.), INDIA |
| Authors: | R. Sharma, K. Kumar |
| Keywords: | walnut, seedling trees, selections |
| Abstract:
A field study was undertaken to select superior walnuts from existing seedling tree populations in Deedag, Chauras, Chikhria, Khal and Gandoori villages of district Sirmour, Himachal Pradesh. Out of a total of 342 trees screened, only 57 trees were found to be regular in bearing and had good nut and kernel characteristics. These pre-selected 57 trees were subjected to comprehensive characterization and evaluation studies to identify superior genotypes. All the selected trees showed considerable variation in growth, floral, yield and quality characters. The yield was maximum (60.5 kg/tree) in SS-51, yield efficiency (0.266 kg/cm2) in SS-2, in –shell nut weight (16.10 g) in SS-57, fat content (68.70 %) in SS-43 and protein content (17.36 %) in SS-56 whereas minimum shell thickness (1.61mm) was recorded in SS-12. SS-57 was last to show the leaf bud burst on 13th April. Two selections, SS-8 and SS-42 had very light kernel colour, a preferred character from marketing point of view. As many as 12 walnut selections namely SS-2, SS-3, SS-17, SS-31, SS-36, SS-41, SS-46, SS-51, SS-52, SS-53, SS-54 and SS-55 were selected on the basis of their having one or more desirable horticultural traits. | |
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