Respon Pertumbuhan Beberapa Hasil Persilangan (F1) Tanaman Jagung (Zea mays L.) Terhadap Cekaman Salinitas Garam (NaCl) Melalui Media Kultur Hara

ABSTRACT
RETNO KENCANA UNGU, 2017. The Vegetative Growth Response of
Same Corn Plants (F1) at Salinity Stress (NaCl) through the Medium of Nutrient
Culture, supervised by Khairunnisa Lubis dan Diana Sofia Hanafiah. The aim of
the research was to know The Vegetative Growth Response of Same Corn Plants
(F1) at Salinity Stress (NaCl) through the Medium of Nutrient Culture. This
research was conducted at Greenhouse Faculty of Agriculture, University of
North Sumatra, Medan, which was held March to April 2017 by using
Randomized Block Design (Rancangan Acak Kelompok/RAK) using two treatment
factors: Population A : NEI 9008 x CLA 46, Population B : CLA 84 x NEI 9008,
Population C : CLA 106 x NEI 9008, Population D : CLA 16 x CLA 84, and
Population E : CLA 84 x P1027 and NaCl (0, 50 ppm, and 100 ppm). The
observed variables were observed are plant height, root length, relative root
length, increment of root length, increment of relative root length , weight of wet
canopy, weight of wet root, weight of dry canopy, weight of dry root, weight of
relative dry canopy, weight of relative dry root, canopy root ratio, and cross
sectional roots. The results of this research show that the population had
significant effect of plant height, root length, weight of wet canopy, weight of dry
canopy, weight of wet root, weight of dry root, canopy root ratio, root volume,
and root length increase. NaCl had a significant effect on cortex diameter. The
interaction between population and NaCl has no significant effect.

Keywords : F1 Population ,Nutrient Culture, and NaCl

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Universitas Sumatera Utara

ABSTRAK
RETNO KENCANA UNGU, 2017. Respon Pertumbuhan Vegetatif
Beberapa Hasil Persilangan (F1) Tanaman Jagung (Zea mays L.) Terhadap
Cekaman Salinitas Garam (NaCl) Melalui Media Kultur Hara dibimbing oleh
Kahirunnisa Lubis dan Diana Sofia Hanafiah. Penelitian ini bertujuan untuk
mengetahui respon pertumbuhan vegetatif beberapa hasil persilangan (F1)
tanaman jagung (Zea mays L.) terhadap cekaman salinitas garam (NaCl) melalui
media kultur hara. Penelitian ini dilaksanakan di Rumah Kaca Fakultas Pertanian
Univeritas Sumatera Utara, Medan yang dilaksanakan bulan Maret-April 2017
menggunakan Rancangan Acak Kelompok (RAK) dengan menggunakan dua
faktor perlakuan yaitu : Populasi A : NEI 9008 x CLA 46, populasi B : CLA 84 x
NEI 9008, populasi C : CLA 106 x NEI 9008, populasi D : CLA 16 x CLA 84,
dan populasi E : CLA 84 x P1027 dan NaCl (0, 50 ppm, dan 100 ppm). Peubah
amatan yang diamati adalah tinggi tanaman, panjang akar, panjang akar relatif,

pertambahan panjang akar, pertambahan panjang akar relatif, bobot basah tajuk,
bobot basah akar, bobot kering tajuk, bobot kering akar, bobot kering tajuk relatif,
bobot kering akar relatif, ratio akar tajuk, dan penampang melintang akar. Hasil
penelitian menunjukkan bahwa populasi berpengaruh nyata tinggi tanaman,
panjang akar, bobot basah tajuk, bobot kering tajuk, bobot basah akar, bobot
kering akar, ratio akar tajuk, volume akar, dan pertambahan panjang akar. NaCl
berpengaruh nyata pada diameter korteks. Interaksi antara populasi dan NaCl
tidak berpengaruh nyata. Populasi C (CLA 106 x NEI 9008) adalah populasi yang
toleran dengan nilai indeks cekaman < 1. Media yang masih dapat di tolerir adalah
pada perlakuan NaCl 50 ppm.
Kata kunci : Kultur hara, NaCl dan Populasi F1.

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Universitas Sumatera Utara