Variation, correlation, regression and path analyses in Eruca sativa Mill.
2014
branches (X4) and plant height (X1) were also significant and positive (P<0.05), while that of branching height (X2) was significant and negative (P<0.05). The regression formula of these agronomic traits to seed yield per plant is Y= -2.134 + 0.010X1- 0.011X2 + 0.049X4 + 0.028X6 + 0.019X7 + 0.056X8 + 0.465X9. Based on the analyses we suggest that future Eruca improvement should focus first on siliqua number per plant, then seeds per siliqua, 1000-seed weight, siliqua number of main raceme, number of secondary branches and plant height, but the negative correlations between 1000-seed weight and seeds per siliqua, 1000-seed weight and siliqua number per plant, siliqua number of main raceme and number of secondary branches should also be considered. The Eruca materials with higher plant, lower branching height, larger and yellow seeds found in this study will be valuable for future Eruca improvement.
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