Pengaruh Ketersediaan Air Terhadap Pertumbuhan Tiga Varietas Cabai Rawit (Capsicum Frutescens)
PENGARUH KETERSEDIAAN AIR TERHADAP PERTUMBUHAN
TIGA VARIETAS CABAI RAWIT (Capsicum frutescens)
ABSTRAK
Penelitian tentang “Pengaruh Ketersediaan Air terhadap Pertumbuhan Tiga
Varietas Cabai Rawit (Capsicum frutescens)” telah dilakukan di Laboratorium
Fisiologi Tumbuhan Fakultas MIPA USU Medan. Penelitian bertujuan untuk
mengetahui pengaruh penurunan ketersediaan air terhadap tiga varietas cabai
rawit, membandingkan tingkat toleransi cabai rawit varietas Lokal, Genie, dan
Bhaskara dan mengetahui pengaruh interaksi tingkat ketersediaan air dan varietas
Capsicum frutescens yang memberikan pertumbuhan optimum. Penelitian
menggunakan Rancangan Acak Lengkap Faktorial dengan tiga varietas cabai
rawit dan lima tingkat ketersediaan air (kontrol, 75%, 50%, 25% dan 10%). Hasil
penelitian menunjukkan varietas cabai rawit dan tingkat ketersediaan air
berpengaruh nyata terhadap tinggi tanaman, diameter akar, Relative Water
Content (RWC), berat kering tajuk, berat kering akar, ratio tajuk akar, Efisiensi
Penggunaan Air (EPA), klorofil b, total klorofil, tebal daun, kerapatan stomata
adaksial dan abaksial, tetapi tidak berpengaruh nyata terhadap diameter batang
dan klorofil a, tetapi tidak berpengaruh nyata terhadap diameter batang dan
klorofil a. Varietas Lokal, Genie dan Bhaskara menunjukkan tingkat toleransi
yang berbeda terhadap penurunan ketersediaan air. Interaksi tingkat ketersediaan
air dan varietas cabai rawit berpengaruh nyata terhadap berat kering akar,
Efisiensi Penggunaan Air (EPA), klorofil a, dan kerapatan stomata abaksial.
Kata kunci: Berat Kering, Cabai, Ketersediaan air, Varietas
Universitas Sumatera Utara
EFFECT OF WATER AVAILABILITY ON GROWTH OF THREE
Chili Pepper (Capsicum frutescens) VARIETIES
ABSTRACT
Research on "Effect of Water Availability on Growth of Three Varieties of Chili
Pepper (Capsicum frutescens)" has been done at Plant Physiology Laboratory
Faculty of Science USU Medan. The objective of this research was compare the
effect of water availability on three chili pepper varieties and tolerance level of
Local varieties, Genie, and Bhaskara, and to know the interaction of water
avaibility and varieties. The factorial completely randomized design with three
chili pepper varieties and five levels of water availability (control, 75%, 50%,
25% and 10%) is used. The results showed varieties of chili pepper and the water
availability showed significant effect on plant height, root diameter, Relative
Water Content (RWC), shoot dry weight, root dry weight, root shoot ratio, Water
Use Efficiency (WUE), chlorophyll b, total chlorophyll, leaf thickness, stomatal
density of adaxial and abaxial, but no significant effect on stem diameter and
chlorophyll a. Varieties of Local, Genie and Bhaskara showed different levels of
tolerance to the decline in water availability. The interaction of water avaibility
and chili pepper varieties showed significant effect on root dry weight, water use
efficiency (WUE), chlorophyll a, and stomatal density of abaxial.
Keywords: chili, dry weight, water avaibility, Variety
Universitas Sumatera Utara
TIGA VARIETAS CABAI RAWIT (Capsicum frutescens)
ABSTRAK
Penelitian tentang “Pengaruh Ketersediaan Air terhadap Pertumbuhan Tiga
Varietas Cabai Rawit (Capsicum frutescens)” telah dilakukan di Laboratorium
Fisiologi Tumbuhan Fakultas MIPA USU Medan. Penelitian bertujuan untuk
mengetahui pengaruh penurunan ketersediaan air terhadap tiga varietas cabai
rawit, membandingkan tingkat toleransi cabai rawit varietas Lokal, Genie, dan
Bhaskara dan mengetahui pengaruh interaksi tingkat ketersediaan air dan varietas
Capsicum frutescens yang memberikan pertumbuhan optimum. Penelitian
menggunakan Rancangan Acak Lengkap Faktorial dengan tiga varietas cabai
rawit dan lima tingkat ketersediaan air (kontrol, 75%, 50%, 25% dan 10%). Hasil
penelitian menunjukkan varietas cabai rawit dan tingkat ketersediaan air
berpengaruh nyata terhadap tinggi tanaman, diameter akar, Relative Water
Content (RWC), berat kering tajuk, berat kering akar, ratio tajuk akar, Efisiensi
Penggunaan Air (EPA), klorofil b, total klorofil, tebal daun, kerapatan stomata
adaksial dan abaksial, tetapi tidak berpengaruh nyata terhadap diameter batang
dan klorofil a, tetapi tidak berpengaruh nyata terhadap diameter batang dan
klorofil a. Varietas Lokal, Genie dan Bhaskara menunjukkan tingkat toleransi
yang berbeda terhadap penurunan ketersediaan air. Interaksi tingkat ketersediaan
air dan varietas cabai rawit berpengaruh nyata terhadap berat kering akar,
Efisiensi Penggunaan Air (EPA), klorofil a, dan kerapatan stomata abaksial.
Kata kunci: Berat Kering, Cabai, Ketersediaan air, Varietas
Universitas Sumatera Utara
EFFECT OF WATER AVAILABILITY ON GROWTH OF THREE
Chili Pepper (Capsicum frutescens) VARIETIES
ABSTRACT
Research on "Effect of Water Availability on Growth of Three Varieties of Chili
Pepper (Capsicum frutescens)" has been done at Plant Physiology Laboratory
Faculty of Science USU Medan. The objective of this research was compare the
effect of water availability on three chili pepper varieties and tolerance level of
Local varieties, Genie, and Bhaskara, and to know the interaction of water
avaibility and varieties. The factorial completely randomized design with three
chili pepper varieties and five levels of water availability (control, 75%, 50%,
25% and 10%) is used. The results showed varieties of chili pepper and the water
availability showed significant effect on plant height, root diameter, Relative
Water Content (RWC), shoot dry weight, root dry weight, root shoot ratio, Water
Use Efficiency (WUE), chlorophyll b, total chlorophyll, leaf thickness, stomatal
density of adaxial and abaxial, but no significant effect on stem diameter and
chlorophyll a. Varieties of Local, Genie and Bhaskara showed different levels of
tolerance to the decline in water availability. The interaction of water avaibility
and chili pepper varieties showed significant effect on root dry weight, water use
efficiency (WUE), chlorophyll a, and stomatal density of abaxial.
Keywords: chili, dry weight, water avaibility, Variety
Universitas Sumatera Utara