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Research Article

SRP. 2020; 11(10): 1219-1223


Stay-Green Response in Maize Hybrids and Cultivars Through SA Application

Sinan. A. Abas, Zeyad A. Abdul Hamed, Aayd A. abed.

Abstract
An experiment was carried out on farm in Ramadi/Anbar, Iraq to study the response of stay-green leaves of maize genotypes sprayed by salicylic acid (SA) under limited irrigation. SA levels: 0, 100, 200, and 300g/l used SA main-plots while maize genotypes were set sub-plots in a split-plot arrangement with RCBD of three replicates. Results showed that the hybrids B73× Ik8 and AGR3×AGR11, and the cultivars Maha gave best values of most traits studied. Plants treated with 300mg/l SA gave increases in sinking, number of functional leaves, leaf area, kernels/row, kernel weight, and grain yield. Values of the interaction of the three mentioned genotypes with 300mg/l SA gave higher plant height, and grain yields in both spring and fall plantings in 2020. It can be concluded that using SA application SA (300mg/l) as growth regulator is useful to enhance growth and grain yield of some maize genotypes.

Key words: Zea mays L., growth regulator, leaf duration



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