Study on Physiological Characteristics of Some Peanut Varieties with High and Low Yield Grown in Thanh Hoa Province

Abstract

       Analysis of physiological characteristics of peannut varieties with high and low yield was done to identify criteria that contribute yield, quality, and tolerance to unfavourable environmental conditions. The experiment was conducted in 2013, 2014 and 2015 spring seasons in Trieu Son, Thanh Hoa province. According to the yield, 10 peannut varieties were divided into 3 groups: high yielding varieties: L26 and TB25; low yielding varieties: lac ly and L12, sen lai; and the medium yielding varieties: L18, L08, L14, L19 and L23. The high-yielding varieties exhibit higher photosynthetic intensity (26,8 mol/m²/s), dry matter accumulation (24,26g), transpiration rate (11,85 mmol/m²/s), stomatal conductance (0,64 mmol/m²/s), leaf area (16,22dm²), and chlorophyll content (1,76 mg/g) at flowering stage.