Đánh giá phản ứng của hai giống lạc L14 và LDH.09 (Arachis hypogaea L.) ở điều kiện gây mặn nhân tạo trong nhà lưới vụ xuân 2025 tại Thành phố Huế

Abstract

The study was conducted to evaluate the response of two groundnut varieties L14 and LDH.09 on growth, yield and grain quality at three different artificial salinity levels at EC = 3 dS/m, 6 dS/m and non-saline condition as control. The two factor experiment was arranged in a randomized complete block design (with RCBD), three replications which set-up in greenhouse conditions in Spring crop 2025 in Hue City. The research results showed that the higher the salinity concentration (from 3 dS/m to 6 dS/m) and at different salinity times (20, 40 and 60 days after salinity) leading to the plant height, the number of primary branches, the length of primary branches, the length of roots, the number of leaves, the dry matter, the number of nodules and weight of nodules, the yield and grain quality of both groundnut varieties were reduced. At salinity level of 6 dS/m, plant yield was reduced by 25,42%, lipid content decreased by 3.90 and 5.18%, protein decreased by 16.00 and 10.85% and carbohydrate decreased by 31.71 and 10.00 mg/g respectively for groundnut varieties LDH.09 and L14 when compared with the non-saline control treatment. The LDH.09 new groundnut variety had higher plant individual yield than the L14 variety in both non-saline and saline conditions. It is necessary to evaluate the salt tolerance of LDH.09 groundnut variety at higher salinity levels > 6 dS/m and conduct field experiments on non-saline and saline soils to have applying new groundnut varieties with salinity tolerance in Hue City.