PJB-2017-535
GENETICS OF VARIOUS FLORAL ORGANS RELATED DIFFERENT FLORAL TRAITS TO INCREASE SELF?POLLINATION IN LAND RACES AND CULTIVATED VARIETIES RELATED TO INCREASE YIELD COMPONENTS IN DIFFERENT GENERATIONS OF RICE (ORYZA SATIVA L.)
P. SAVITHA
Abstract
Floral characteristics such as large anthers to release great quantities of pollen grains into the surrounding environment, extruding stigmas that can readily intercept foreign pollen grains can be associated with increased outcrossing rates in some land races and improved cultivars. Experimental material consisted of ten parents which included six high yielding varieties used as female parents (IR72, ADT39, ADT43, ADT45, ASD16 and TPS4) and four traditional landraces used as male parents (Veeradangan, Kavuni, Navara and Kathanellu), F1, F2 and F3 generation of six crosses viz., IR72 x Veeradangan, ADT39 x Kavuni, ADT45 x Kavuni, ADT43 x Navara, ASD16 x Navara and TPS4 x Kathanellu. In F2 and F3 generation based on per se performance, single plant yield, plant morphology, floral traits and pollen fertility the hybrids viz., IR72 x Veeradangan, ADT39 x Kavuni were found to be the best hybrids for single plant yield to analyses floral characters. In F3 segregants for various floral characters that directly correlated with number of filled grains per panicle the experiments directed for improving our understanding of the various floral traits positive relationship number of filled grains per panicle it was directly moved to increase the yield of improved cultivars in segregating generations.
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