Morphological Response Of Some Brown Rice Varieties (Oryza sativa L.) Using Polyethylene Glycol 6000 at Vegetative Phase
Siti Fadhilah(a), Eva Sartini Bayu(b*), Hot Setiado(b), Asni(c)
a) Student of Agrotechnology Department, Faculty of Agriculture, Universitas Sumatera Utara, Medan 20155 Jl. Prof. A. Sofyan No.3, Medan 20155, Indonesia
b) Lecture of Agrotechnology Department, Faculty of Agriculture, Universitas Sumatera Utara, Medan 20155 Jl. Prof. A. Sofyan No.3, Medan 20155, Indonesia
*evagirsang61[at]gmail.com
c) The Laboratory staff of Laboratory Biotechnology Plant Faculty of Agriculture,
Universitas Sumatera Utara, Medan 20155 Jl. Prof. A. Sofyan No.3, Medan 20155, Indonesia
Abstract
Rice is a food crop that generally planted in rainfed land that utilizes rainwater as its primary supplier so that testing of several drought-tolerant rice varieties is needed. The research examined the morphological response of brown rice to drought in the vegetative phase by treating the addition of Polyethylene Glycol (PEG) 6000 with a level of 20 g / l water. The research conducted at the Faculty of Agricultures Greenhouse, University of Sumatera Utara, held in October 2018 until January 2019 using a randomized block design consisting of two factors with three replications. The results showed that the treatment of watering intervals of 14 days and 21 days on average plant height (75.14 - 67.71 cm), number of leaves (20.33 - 19.42 strands), number of tillers (4.11 - 3.67 tillers) and root volume (5.44 - 3.67 ml) were not significantly different compared to the control treatment, the highest average root length found in the watering interval of 21 days (29.13 cm). Of the several tested varieties obtained genotypes that were most resistant to drought stress based on their morphological responses were Inpago 7 varieties compared to Inpara 7 and Inpari 24 Gabusan varieties.
Keywords: rice, varieties, peg 6000, morphological response, drought stress
Topic: International Conference on Sustainable Agriculture