Syaidatul Rosidah
Institut Pertanian Bogor

Published : 2 Documents
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Pendugaan Parameter Genetik Ketahanan Tanaman Cabai terhadap Penyakit Antraknosa

Jurnal Fitopatologi Indonesia Vol 10, No 6 (2014)
Publisher : Jurnal Fitopatologi Indonesia

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Abstract

Fruits of chili pepper as crossing population between C15 and C2 genotype were used to study genetic parameter of resistance for anthracnose disease caused by Colletotrichum acutatum. Twenty mature green chili pepper fruits from each plant were inoculated by C. acutatum PYK 04 isolate. The results showed that resistance to anthracnose in chili pepper was controlled by recessive gene. Broad-sence heritability were high for both disease incidence and necrotic diameter. Narrow-sence heritability were high for stem diameter and low for necrotic diameter. Additive-variance ratio were high for disease incidence and medium for necrotic diameter. Development of resistance varieties of chili pepper to anthracnose should be subjected to line varieties.

Estimation of Genetic Parameter for Quantitative Characters of Pepper (Capsicum annuum L.)

Journal of Tropical Crop Science Vol 1 No 1 (2014): Journal of Tropical Crop Science
Publisher : Journal of Tropical Crop Science

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Abstract

The research was conducted at Leuwikopo Experimental Field and Plant Breeding Laboratory of IPB, Dramaga, Bogor, West Java, Indonesia from October 2012 to April 2013. Crossing population between C15 and C2 genotype were used to study genetic parameters for quantitative characters in pepper. All the characters were not controlled by maternal effect, except fruit length. Broad-sense heritability were high for plant height, stem diameter, dichotomous height, days to flower, days to harvest; and medium for fruit length and diameter. Narrow-sense heritability was high for stem diameter, dichotomous height, days for flowering; medium for plant height, days to harvest; and low for fruit length and diameter. The ratio of additive variance was high for all the characters, except for fruit length and fruit diameter.Keywords: heritability, heterosis, heterobeltiosis, additive variance, dominant variance