Research on Physiological Parameters of Some Peanuts Varieties (Arachis hypogaea L.) with Different Yields Grown in Vietnam

Analysis of the physiological parameters of some peanut varieties to find out the difference between them is one of the methods contributing to the prequalification of high-yielding varieties with good quality and good tolerance to harsh conditions and environmental disadvantages. This paper presents research results on some physiological parameters of high-yielding and low-yielding peanut varieties planted in Thanhhoa province, Vietnam. Experimental results have grouped peanut varieties according to actual yield into two groups: high-yielding group: L26, L18, and L08 (L26: 38.05 quintal/ha, L18: 35.42 quintal/ha, L08: 34.75 quintal/ha), low yielding group: L12, L23, and L14 (L12: 27.11 quintals/ha, L23: 29.92 quintals/ha, L14: 30.41 quintals/ha). The high-yielding peanut varieties showed some better physiological parameters than the low-yielding varieties, typically in photosynthetic intensity, accumulated dry matter, transpiration intensity, stomatal conductivity, leaf area, and chlorophyll content. This result is the basis for prequalifying high-yielding peanut varieties based on the difference in some physiological parameters during growth and development.