Mekanisme Morfologi dan Fisiologi Tanaman Padi pada Kondisi Rebah dan Strategi Adaptasinya

Dulbari Dulbari, Eko Sulistyono, Yonny Koesmaryono

Abstract


Extreme weather incident refers to high rainfall and strong winds have been speculated detriment on rice production.  However, study on morphological and physiological mechanism, and its adaptation strategy on lodging are rarely reported. Thus, three experiments were conducted in Sawah Baru, Leuwikopo, and Lampung Province, Indonesia from January 2016 to June 2017. The results showed that extreme weather caused rice plant lodged on research area of 27.6% with production loss up to 11.89%. Morphology and physiological adaptations seemed important aspect in responses to extreme weather treatment. Biochemistry composition changed after lodging, especially fatty acid, terpene, alkane, and steroid.  Lodging increased total biochemistry compound more than 48% of normal plant. Unlike marked production loss in the plot experiment, in the field, impact of extreme weather on reduction of rice production in Lampung Province was low, 1.03%. Shifting on rice production among agroclimates, minimized the impact of the extreme weather. It is likely that local ability to maintain annual production improvement by more than 5% through expansion of irrigated land, high yielding varieties and inputs subsidies were important factor as local strategy to adapt to extreme weather incident in Lampung.

Keywords: lodging, stomata, photosynthesis, fatty acid, rice production


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DOI: https://doi.org/10.25047/jii.v18i3.1239

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