EFFECT OF PHYSIOLOGICAL PARAMETERS ON GRAINYIELD AND YIELD COMPONENTS OF HYBRID MAIZE{ZEA MAYS L.) VARIETIES

摘要

This study was carried out in order to determine the effect of some physiological parameters on grain yield and yield components of hybrid maize varieties at the trial site of GAP Agricultural Research Insti-tute in 2018 and 2019 years. Trials were established in a randomized complete block design with three replications. Fifteen medium late maturing hybrid maize varieties were used as metarial. According to the results; Plant Height (PH), Tasseling Time (TT), Grain Moisture (GM), Grain/Cob Rate (GCR), 1000 Grain Weight (GW), Hectoliter (H), Grain Yield (GY), Chlorophyll Content (CC) and Stomatal Con-ductance (SC) ranged between 201.3-307.5 cm, 50.0-60.7 days, 16.7-28.2%, 76.0-86.0%, 241.6-304.5 g, 54.4-70.7 kg ha-1, 8.3-13.9 t ha-1, 38.5-61.8 spad and 92.7-416.4 H2O m-2 s1 respectively. Public hybrid maize varieties referred to as PL151-0218, SASA-137 and SASA-133 placed in the same group when compared to the check varieties. It has been determined that public varieties can be recom-mended for second crop conditions in the GAP re-gion and the grain yield had statistically significant relationships with yield components and physiologi-cal parameters except grain moisture in correlation analysis, and important yield parameters of maize varieties can be determined in early growing stages through physiological parameters.