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I Gusti Made Arya Parwata
"ABSTRACT
Jarak pagar (Jatropha curcasL.), salah satu tanaman sumber bahan bakar nabati tropis, telah terkenal karena ketahanannya terhadap
cekaman kekeringan, akan tetapi, kemampuannya untuk tumbuh pada lingkungan yang kering masih jarang diteliti.
Perubahan status air daun, kadar klorofil, suhu permukaan daun, konduktansi stomata, kadar prolin dan
abcisic acid (ABA), laju transpirasi dan fotosintesis dikaji pada empat genotip jarak pakar (IP-1A, IP-2M, Unggul lokal dan Daun
kuning) yang diperlakukan cekaman kekeringan pada lahan pasir pantai di Jawa Tengah, Indonesia. Cekaman kekeringan menurunkan secara signifikan status air daun, kadar klorofil daun, konduktansi stomata, laju transpirasi dan fotosintesis, dan meningkatkan suhu daun, kadar prolin dan ABA. Genotip tahan (IP-1A dan IP-2M) memiliki status air daun, kadar klorofil dan laju fotosintesis lebih tinggi secara signifikan dibandingkan dengan genotip yang peka (Unggul
lokal dan Daun kuning). Tidak terdapat perbedaan yang nyata di ntara genotip jarak pagar terhadap suhu daun, konduktansi stomata dan laju transpirasi.

Abstract
Jatropha curcas L., an important tropical biofuel crop, is reputed for its drought resistance, however, its ability to perform in dry conditions has still hardly been investigated. Changes in leaf water status, chlorophyll content, leaf surface temperature, stomatal conductan
ce, proline and abcisic acid (ABA) content, transpiration and photosyntheticrate were studied in four
Jatropha genotypes (IP-1A, IP-2M, Local superior and Yellow leaf) and subjected to drought stress in coastal sandy land conditions in Central Java, Indonesia. Drought stress significan
tly decreased the leaf water status, leaf chlorophyll content, stomatal conductance, transpiration and photosynthetic rate, and increased leaf
temperature, proline and ABA content. Resistant genotypes (IP-1A and IP-2M) had significantly higher leaf water status, chlorophyll content and photosynthetic rate than susceptible genotypes (Local superior and Yellow leaf). There were no differences between the
Jatropha genotypes on leaf temperature, stomat
al conductance and transpiration rate."
[Direktorat Riset dan Pengabdian Masyarakat UI;Universitas Mataram. Fakultas Pertanian;Universitas Mataram. Fakultas Pertanian;Universitas Mataram. Fakultas Pertanian, Universitas Mataram. Fakultas Pertanian], 2012
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Artikel Jurnal  Universitas Indonesia Library
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Gunther Witzany, editor
"This book shows how plants assess their surroundings, estimate their energy needs for specific goals, and communicate with each other to coordinate behavioral patterns. Coverage includes the role of viruses in these highly dynamic interactional networks."
Berlin: [, Springer-Verlag], 2012
e20417810
eBooks  Universitas Indonesia Library
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Jones, Hamlyn G.
"This rigorous yet accessible text introduces the key physical and biochemical processes involved in plant interactions with the aerial environment. It is designed to make the more numerical aspects of the subject accessible to plant and environmental science students, and will also provide a valuable reference source to practitioners and researchers in the field. The third edition of this widely recognised text has been completely revised and updated to take account of key developments in the field. Approximately half of the references are new to this edition and relevant online resources are also incorporated for the first time. The recent proliferation of molecular and genetic research on plants is related to whole plant responses, showing how these new approaches can advance our understanding of the biophysical interactions between plants and the atmosphere. Remote sensing technologies and their applications in the study of plant function are also covered in greater detail"-- Provided by publisher."
Cambridge, UK: Cambridge University Press, 2014
581.722 JON p
Buku Teks  Universitas Indonesia Library