CD Disertasi

Korelasi Sifat Perkembangan Biji Dan Komponen Hasil Untuk Kriteria Seleksi Hasil Kedelai (Glicyne Max (L.) Merril) Pada Berbagai Kerapatan Tanam

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Direct selection to obtain high yielding genotipes in soybean must be
applied in later generation (F4 or F5) in order to have enough materials in the
population to be evaluated. So, in this research, we intent to identify any
character that may be evaluated from individual plant as alternative selection
criteria to select high yielding genotypes. The objectives of this research were to
determine genetic correlation among several seed developmental traits and yield
components to be used as alternative selection creteria to obtain high yielding
cultivars over various plant densities. The field experiment was conducted in the
Faculty of Agriculture Experiment Station in 2021. Seven varieties of soybean;
ie, Anjasmoro, Agromulyo, Deja-1, Deja-2, Devon-1, Devon-2, and Dega-1 were
grown on three levels of planting density including 100.000 plants per ha,
125.000 plants per ha, and 140.000 plents per ha. Characters observed were plant
height, flowering date, harvesting date, seed dry weight at 15 days after
pollination (DAP), seed dry weight at 22 DAP, seed dry weight at harvest,
effective seed filling duration, number of filled pods per plant, number of seeds
per plant, seed weight per planted, weight of 100 seeds, and seed yield per m2.
Genetic component of variance and heritabilities were calculated according to
Hallauer et al. (2010), and coefficient of genetic correlation and selction response
were followed the procedure of Falconer (1990).
The results indicated significant variability among soybean varieties on all
charakters observed. Plant densities only affected significantly on seed dry
weight at harvest, dry matter accumulation rate, effective seed filling duration,
seed weight per plant, and yield per m2 but not on other characters. Genetic
components of variance were relatively wide for flowering date, harvesting date,
seed dry weight at 15 days after pollination (DAP), seed dry weight at 22 DAP,
seed dry weight at harvest, effective seed filling duration, number of filled pods
per plant, and seed weight per plant. However, number of seeds per plant, seed
weight per plant, weight of 100 seeds, and seed yield per m2 had relatively
narrow genetic variance. Heritability values of the characters ranging from
31,11% to 97,12%, being the highest for harvesting date dan the lowest for yield
per m2. Genetic coefficient of correlation among yield components and other
characters ranged from -0,01 to 0,71 in which the value of -/+ 40 was considered
having high relationship. Seed dry weight per plant was positively correlated to
dry matter accumulation rate, number of filled pod per plant, and number of seed
per plant. Grain yield per m2 was positively correlated to dry matter
accumulation rate, plant height, number of filled pod per plant, and number of
seed per plant. The direct response of selection was higher than indirect response
for all characters. High selection response of grain yield per m2 were obtained if
selection were imposed to plant height, number of filled pod per plant, number of
seed per plant, and seed weight per plant. So that, the more effective characters
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for alternative selection criteria to obtain high yielding genotypes were number of
filled pod per plant, number of seed per plant, and seed weight per plant.
Keywords: genetic correlation, genetic variance, heritability, selection response,
soybean, plant density.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

2010242010

Penerbit

Pekanbaru : Universitas Riau – Pascasarjana – Tesis Ilmu Pertanian., 2023

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

-

Klasifikasi

2010242010

Tipe Isi

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Tipe Media

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Tipe Pembawa

-

Edisi

-

Subjek

ILMU PERTANIAN

Info Detail Spesifik

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Pernyataan Tanggungjawab

FATAH

Versi lain/terkait

Lampiran Berkas

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