Pelayuan Daun pada Padi Lokal Sulut Saat Kekeringan

Abstract

Kekeringan merupakan faktor pembatas utama pada pertumbuhan dan perkembangan tanaman. Penelitian ini bertujuan untuk mengamati skor kelayuan pada padi lokal Sulawesi Utara yang diberi cekaman kekeringan. Penelitian dilaksanakan di rumah kaca di Kelurahan Tingkulu, Manadao, Sulawesi Utara dari bulan April sampai Mei 2015. Penelitian ini menggunakan desain Rancangan Acak Lengkap (RAL) dengan 4 varietas (Superwin, Ombong, Temo dan Burungan) yang diberikan 2 perlakuan pengairan dan 7 ulangan. Kedua perlakuan pengairan adalah diairi sampai kapasitas lapang dan tidak diairi selama 20 hari pada fase vegetatif tanaman. Skor kelayuan daun (1-9) dapat diamati dan ditentukan berdasarkan System of Standar Evaluation, IRRI. Penelitian ini menunjukkan bahwa kekeringan akan memicu pelayuan daun karena menurunnya potensial air di daun.

Drought is a major limiting factor for plant growth and development. Leaf wilting in plant could indicate the drought stress. The objective of this experiment was to identify the leaf wilting score of North Sulawesi local rice cultivars as response to drought. The experiment was conducted  in the glasshouse in April to May 2015 at Tingkulu, Manado, North Sulawesi. The experiment was a completely randomized design (CRD) of 4 cultivars (Superwin, Temo, Ombong and Burungan) grown in 2 water regimes, with 1 sampling times and 7 replicates. The two water regimes were well-watered (WW) and water deficit (WD) obtained by withholding water for 20 days at the vegetative phase.  Leaf wilting score (1-9) could be visually determined based on the System of Standar Evaluation in rice by IRRI. The experiment showed that drought periode correlated with the increase of wilting score causes by low water potential.