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Home> Published Issues> 2018> Volume 5, No. 3, September 2018

Sensitivity Index of Several Drought-Tolerant Maize Genotipes on the Drought Stress

St. Subaedah, Sudirman Numba, Saida, and Farizah Dhaifina Amran
Faculty of Agriculture, University Muslim Indonesia, Makassar, South Sulawesi, Indonesia

Abstract—One of the efforts that can be done in the development of maize in dry land is the use of drought-tolerant varieties. This study was conducted with the aim of analyzing the sensitivity index of several drought-tolerant corn genotypes in an environment that suffered from drought stress. The study was conducted from June to August 2016 in Gowa District, South Sulawesi. The treatments were arranged in Split Plot Design. The main plot was the treatment of stress consisting of two levels ie without stress (optimal water delivery) and the treatment of stress (watering was stopped when the plants are 35 to 70 days old). Subplot was maize genotypes consisting of 8 hybrid candidate maize genotypes ie G1, G2, G3, G4, G5, G6, G7, G8 and two checked varieties (Bima7 and Lamuru). Result of observation on drought sensitivity index from plant height variables showed that genotype G2 and G5 were included in the drought tolerant genotype category, while genotype G6, G7, and G8 medium tolerant. For dry seed weight parameter per ha indicated that genotype G6, G7, and G8 have Sensitivity index value in medium tolerant to tolerant category. The production rate of G6, G7 and G8 genotypes under drought-stressed conditions was still quite high between 6.92-7.47 t.ha-1.
 
Index Terms—sensitivity index, genotype, tolerant, drought-stressed

Cite: St. Subaedah, Sudirman Numba, Saida, and Farizah Dhaifina Amran, "Sensitivity Index of Several Drought-Tolerant Maize Genotipes on the Drought Stress," Journal of Advanced Agricultural Technologies, Vol. 5, No. 3, pp. 252-256, September 2018. Doi: 10.18178/joaat.5.3.252-256

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