Green Global
Foundation   Journal
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RELATIONSHIPS OF PHOTOSYNTHETIC RELATED PARAMETERS AND YIELD OF SUMMER MUNGBEAN VARIETIES/MUTANTS (Pages : 11 - 15)

A pot experiment was conducted to evaluate 20 summer mungbean genotypes (5 varieties and 15 mutants). Higher photosynthetic rate (PN) at grain growth stage was observed in most of the high yielding genotypes. However, yield of 20 mungbean genotypes were not correlated with PN. Yield was positively correlated with leaf area (0.560*) and total dry matter (TDM) plant -1 (0.869**). Positive relationship between PN and leaf conductance (Gl) (0.452*), Gl and transpiration rate (Tr) (0.916**), leaf area and TDM (0.474*), CO2_S (sample chamber CO2) and vapor pressure deficit (VpdL) (0.622**) and negative relationship between Gl and water use efficiency (WUE) (-0.648**), Tr and WUE (-0.754**), Ci/Ca (intercellular CO2/ambient CO2) and CO2_S (-0.484*), Ci/Ca and VpdL (- 0.458*), PN and CO2_S (-0.605**) were observed. Higher PN and higher WUE in high yielding mutants, MBM-18 and MBM-292 showed the superiority among the mutants/varieties studied. And also suggests the suitability of these mutants in cultivating under water stress and optimum soil moisture conditions. Higher WUE in the mutants, MBM-21, MBM-249, MBM-302 and N4I-913 indicates suitability of these mutants for only water stress condition. Higher PN, higher transpiration rate and medium WUE in the high yielding varieties, Binamoog-5, Binamoog-6 and Binamoog-7 showed the capability of these genotypes to produce high yield under optimum soil moisture condition. Download