Comparative Analysis of Variability in Two Ecotypes of Indian Rapeseed (Brassica campestris L. var. Yellow and Brown Sarson)

Abstract

One hundred and fifty gerrnplasm accessions of two ecotypes of Indian rape (Brassica campestris L.) namely var. brown sarson (90 accessions) and var. yellow sarson (60 accessions) were characterized for 10 agro-morphological traits. Wide range in means were observed in the two ecotypes. The accessions of brown sarson matured one week earlier and also had slightly less height than that of yellow sarson. Mean secondary branches/plant. seeds/siliqua and 1000 seed weight were higher in yellow sarson ecotype than that of brown sarson. Irrespective of the group, oil content (CV 2.7-2.9%) and plant height (CV3.7-4.l %) had the lowest variation whereas, primary branches/plant (CV 27.0-35.9) and secondary branches/plant (CV 38.4-49.1 %) the highest. The useful accessions for different agromorphological traits were identified from both the ecotypes. The pattern of grouping is presented and 10 accessions with high oil content (~5%) are also listed and characterized