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PERKEMBANGAN ONTOGENETIK DAUN TANAMAN KARET SEBAGAI PENANDA AWAL ADAPTASI TERHADAP CEKAMAN LINGKUNGAN DAN PATOGEN Junaidi Junaidi; Atminingsih Atminingsih
Warta Perkaretan Vol. 36 No. 1 (2017): Volume 36, Nomor 1, Tahun 2017
Publisher : Pusat Penelitian Karet - PT. Riset Perkebunan Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (394.042 KB) | DOI: 10.22302/ppk.wp.v36i1.296

Abstract

Clonal rubber leaves vary in shape, size, morphology and anatomy. Leaves development stages can be distinguished as A, B, C and D phase. In stage A, the leaflet hang vertically toward petioles. In stage B their color are light brown green with soft texture. In stage C, the leaflets are almost fully grown with firm laminae. In stage D, the leaflets have fully developed in nearly horizontal position. Physiologically, stage A and B are sink while stage C and D are source. The shorter transition from sink to source in new leaves is important response to environmental stress and pathogen. Therefore, leaves ontogenetical development can be used as early marker of plant adaptability to environment. Similar researches are necessary to be carried out using Indonesian specific clones and environment.