Journal of Horticultural Sciences

B. Varalakshmi ¹, Devaraju ²

Affiliations
1 Division of Vegetable Crops, Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangalore-560 089, IN
2 Department of Horticulture, Chamarajanagar, Karnataka, IN

Abstract

Evaluation of eleven germplasm lines of the Indian spinach (basella) revealed maximum leaf weight/plant in IIHR-1 (160.5g), followed by IIHR-18 (111.6g) and IIHR-3 (98.3g). Results of genetic studies revealed that phenotypic coefficient of variation was higher than genotypic coefficient of variation for all the traits studied, indicating environmental influence on expression of these characters. Moderate heritability along with high genetic advance was recorded for leaf weight and total plant weight, indicating the presence of additive gene effects. Hence, selection can be employed for improvement of these characters in basella. Higher plant weight was found to be significantly and positively associated with branch number, leaf number, leaf weight and stem weight. Leaf number had the maximum direct positive effect on total plant weight, followed by leaf length. Indirect effects of other characters through these characters were also seen to be positive. Thus, for yield improvement in basella, emphasis may be laid on indirect selection through leaf characters like leaf number, leaf length and leaf weight.

Keywords

Basella alba, Indian Spinach, Genetic Variability, Heritability, Path Analysis.

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N. Mohan ¹, T. S. Aghora ¹, Devaraju ¹

Affiliations
1 Division of Vegetable Crops, Indian Institute of Horticultural Research, Hesarghatta Lake Post, Bangalore - 560 089, IN

Abstract

Fifty seven pole type vegetable dolichos bean (Lablab purpureus var. typicus) germplasm lines collected from Tamil Nadu, Karnataka and Pondicherry were evaluated in a replicated experiment at Indian Institute of Horticultural Research, Bangalore, for pod yield and pod -related traits during 2006-08. Significant differences were recorded for all traits studied. IIHR 177 was the earliest to flower in 43 days and pods matured in 65 days. IIHR 6 recorded maximum pod length (16.5 cm) , and, ten-pod weight was maximum in IIHR 7 (122 g). Pod width was high in IIHR 11 (4.05 cm). Number of pods per plant ranged from 10 to 91, with the maximum in IIHR 159. Maximum pod-yield was recorded in IIHR 150 and IIHR 159 (576.0 g/plant). Six different pod-colors (green, light green, purple, purple green, pink and creamy- white) were recorded. Maximum number of lines (52.63%) had green pod. The present study indicates existence of a wide range of variability for pod characters, namely, pod-maturity, pod -length, tenpod weight, number of pods per plant and pod- colour. High yielding lines with different pod types can serve as potentially useful parents in further breeding.

Keywords

Dolichos, Germplasm, Variability.

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