Relationship between floral and agronomic traits in Indian mustard (Brassica juncea L.)
Thirty-four varieties of Indian mustard (B. juncea) were grown in replicated block design keeping plot size of 5 m long 5 rows grown at 45 cm row to row and 15 cm plant to plant spacings during crop season of 2004-05 and 2005-06. Observations were recorded on 20 plants from each variety on 13 characteristics including 4 floral traits viz. petal length, petal width, stamen length and style length. Remaining nine traits included plant height at the time of flower initiation, number of leaves at flower initiation, days to flower initiation, day to maturity, seeds per siliqua, 1000 seed weight (g), seed yield (g/plant), protein and oil content (％). Analysis of variance revealed the presence of significant variatation for all the traits. The variability, as depicted by coefficient of variation, was high for seed yield, 1000-seed weight and plant height at the time of flower initiation, low for oil and protein content and days to maturity. Remaining traits showed moderate variability. Seed yield had significant and positive correlation with plant height at the time of flowering, petal length, petal width, stamen length, style length and 1000-seed weight.Significant but negative relationship was observed between seed yield and protein content. Oil content had significant and positive correlation with petal length. Days to flower initiation, days to maturity and protein content were found negatively correlated with oil content. Petal width had significant and positive correlation with number of leaves at flower initiation and plant height at maturity, negative correlation with plant height at flower initiation, petal width and style length. Days to flower initiation had positive correlaton with plant height at flower initiation, plant height at maturity, petal length, petal width, stamen length and style length. Style length had positive correlation with petal width and stamen length. Stamen length had positive correlation with petal length and petal width. This information is useful for indirect selection for high seed and oil yield It is recommended on the basis of these findings that plants bearing long and broad petals coupled with tall style and stamens should be selected for high seed and oil yield.
Indian mustard Brassica juncea correlation variability petal length petal width agronomic traits
K.H.Singh R.K.Mahawar Arvind Kumar
National Research Centre on Rapeseed Mustard Sewar- 321 303, Bharatpur (Rajasthan) India
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
228-231
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）