Vol. 7, Special Issue 5 (2018)
Reciprocal crosses in early maturing x high yielding rice (Oryza sativa L.) cultivars
Author(s): Mukesh Kr Singh, Ravi P Singh, P Singh, Ravish Kr Singh and RP Srivastava
Abstract: Maximum human food is derived from cereal crop plants which are member of Gramineae family hence, wheat and rice are supplying more than 65% human food requirement for the world population. Reciprocal differences persist in nature because of the unequal involvement of cytoplasmic genes from male and female gametes to the zygote. The inheritance of genetic differences is an important factor that influences various traits, including quality and quantity both in various crops. An experiment was conducted to evaluate the significance differences in between reciprocal crosses of early maturing x high yielding rice cultivars for their genetic control of morphological and yield characteristics. Seven early maturing and four high yielding varieties crossed in reciprocal matting system and produced fifty six F1’s in line x tester fashion. The observations of morphological and yield traits were taken in two different kharif sessions. On the basis of present study, it may be concluded that the significant differences were not exhibited in most of the morphologically and yield characteristics in reciprocal crosses except grain 1000-weight and grain yield per plant rice crop. This study could be helpful in further work in heterosis breeding and hybridization programmes in rice crop improvements.