Inheritance pattern of some quantitative traits of Brassica juneca

Brassica juncea (L.) is an important cool season oilseed crop in Pakistan and competes with wheat for area and inputs. Pakistan is producing about 34% of total requirement of edible oil and a huge amount of foreign exchange is spent on the import of oil. Therefore, it is needed to increase domestic oil production by increasing seed yield and improving oil quality. Due to its short life cycle and better adaptability Brassica juncea (L.) can be a good source to fill the gap between production and consumption. During the present investigation, genetic expression was ascertained on different plant descriptive such as morpholologicaL seed yield and yield related traits using five lines (RBJ-8003, RBJ-07015, NBASIAN-95, KN-256x-KX-257, R2) and their hybrids in diallel fashion under randomized complete block design with three replication. The information derived from these studies would be helpful in future breeding programs in the development of high yielding Brassica juncea (L.) varieties. For RBJ-07015 graphical approach indicated that it has maximum dominant genes for number of seeds per pod, Days to 50% Flowering, Days to 100% Flowering and Oil contents. It has maximum number of recessive genes for seed yield per plant and moderate number of dominant and recessive genes for plant height, primary branches per plant, secondary branches per plant and pods per plant. For NBASIAN-95 the graphical approach indicated that it has maximum dominant genes for number of secondary branches per plant and protein contents. NBASIAN-95 has maximum number of recessive genes for germination and moderate number of dominant and recessive genes for plant height, primary branches per plant, pod length and oil contents. For KN-256x-KX-257 the graphical approach indicated that it has maximum dominant genes for Primary branches per plant, secondary branches per plant, 1000 seed weight and seed yield per plant. KN-256xKX-257 has maximum number of recessive genes for plant height, pods per plant, seeds per pod, days taken to 50% flowering and Days taken to 100% flowering and protein contents. The present research was an effort of gathering and developing information on genetics of different yield and yield related traits of Brassica juncea (L.) which should be helpful for researchers to improve its yield related traits and oil quality and hopefully this improvement will be helpful in convincing farmers to improve its area and production in Pakistan.