KANDUNGAN AIR PADA SEGMEN DAUN TANAMAN PADI (Oryza sativa L.) LOKAL SULAWESI UTARA SAAT KEKERINGAN YANG DIINDUKSI DENGAN POLIETILEN GLIKOL 8000

Risa Junita Mereh, Nio Song Ai, Parluhutan Siahaan
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Abstract

KANDUNGAN AIR PADA SEGMEN DAUN TANAMAN PADI (Oryza sativa L.) LOKAL SULAWESI UTARA SAAT KEKERINGAN YANG DIINDUKSI DENGAN POLIETILEN GLIKOL 8000 ABSTRAKPenelitian ini telah dilakukan untuk mengkaji kandungan air sebagai respon fisiologi pada segmen daun tanaman padi lokal Sulut (varietas Temo, Ombong, Burungan, dan Superwin) terhadap kekeringan yang diinduksi dengan PEG 8000 secara in vitro. Segmen daun padi dipotong-potong 1 cm x 1 cm dan diberi tiga macam perlakuan PEG 8000 (dengan potensial air/PA medium 0; -0,25; dan -0,5 MPa), dan empat waktu pengambilan sampel (0, 4, 8 dan 12 jam) dalam tiga kali ulangan. Hasil penelitian menunjukkan bahwa bahwa faktor varietas, faktor waktu perlakuan,  faktor konsentrasi PEG 8000, dan interaksi antara ketiga faktor tersebut tidak menyebabkan perbedaan kandungan air segmen daun yang nyata.Kata kunci: Cekaman kekeringan, PEG 8000, Potensial air, Segmen daun LEAF WATER CONTENT IN LEAF SEGMENTS OF NORTH SULAWESI LOCAL RICE (Oryza sativa L.)  UNDER POLYETHYLENE-GLYCOL- 8000-INDUCED DROUGHTED DROUGHTABSTRACTA study was conducted to evaluate leaf water content as one of physiological responses in leaf segments of North Sulawesi local rice (cv. Temo, Ombong, Burungan, and Superwin) under PEG 8000- induced-drought. The rice leaves were cut into 1 cm x 1 cm segments and treated withPEG 8000 solutions  (medium water potential or PA of 0; -0.25; and -0.5 MPa),four sampling times (0, 4, 8 and 12 hours) and 3 replicates. The results indicated that factors of varieties, treatment period, concentration of PEG 8000, and interaction among these factors did not result in any differences in water content of rice leaf segments.Keywords: Drought stress, PEG 8000, Water potential, Leaf segment
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水稻作物(Oryza sativa L.)的含水量北苏拉威西地区在干旱期间使用聚乙烯乙二醇8000进行诱导
含水量在部分叶水稻(Oryza sativa L .)北苏拉威西的当地团体当干旱诱导的聚乙烯乙二醇8000 ABSTRAKPenelitian这做了回顾含水量为生理学反应当地水稻叶子部分点燃(恐怕我Ombong Burungan,品种和Superwin)对体外诱导地PEG 8000的干旱。叶子部分水稻肢解1厘米×1厘米和潜在的待遇得到了三种PEG 8000(水/ PA媒介0;-0,25;和- 0.5 MPa),和四次取样时间(0、4、8和12小时)在三次重复。研究结果表明,玉米品种,因式分解时间因素,因式分解待遇PEG 8000浓度,这些因素之间的相互作用导致不同含水量的叶子部分并不真实。关键词:Cekaman干旱、潜在的8000 (PEG baily),水叶水叶部分内容在北苏拉威西的LEAF SEGMENTS LOCAL赖斯(Oryza sativa L .)下POLYETHYLENE-GLYCOL - 8000-INDUCED DROUGHTED DROUGHTABSTRACTA study was conducted to evaluate叶水满足美国一号of physiological“回嘴在leaf segments of北苏拉威西local赖斯(简历)。恐怕我Ombong Burungan,山脉和Superwin)下8000 - induced-drought。《rice树叶是切进1厘米×1厘米segments和枉withPEG 8000的解决方案(水潜在的介质或PA 0;0。25;抽样和0。5 MPa),四时报(0、4、8和12小时)和3 replicates。The results indicated that factors of varieties,治疗期,双臀of 8000 (PEG baily), and interaction)》这些factors在不是论点》和任何分歧都又水赖斯leaf segments)的内容。安装:干旱压力、PEG 8000,水潜在的Leaf segment)
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