Interaksi Genetik x Lingkungan dan Variabilitas Genetik Galur Gandum Introduksi (Triticum aestivum L.) di Agroekosistem Tropika
No Thumbnail Available
Date
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumber Daya Genetik Pertanian
Abstract
Description
Thefocus of wheat research in Indonesia is to obtained newpotential wheat lines that are adapted to low-mid elevationand heat tolerant. This study was aimed to obtaininformation on the effect of interaction of season x line xlocation and genetic variability of wheat lines in tropicalagroecosystem. This study was conducted at the Seameo-Biotrop (<400 masl) and Indonesian Ornamental CropsResearch Institute-Cipanas (>1,000 masl) experimental fieldfor two seasons. The results showed that there was an effectof interaction of season x line x location on plant height,days to flowering, number of spikelet and floret, seed/headweight, rate of grain filling, yield, flag leaf width, stomatadensity, chlorophyll b, and leaf greenness. Meanwhileseveral characters were only influenced by the interaction ofline x location, they were yield component characters, ie.empty floret percentage, number of seed/ head, 1,000 seedweight, number of head/m2 and seed/plant weight. Sevencharacters were not influenced by interaction of neitherseason x line x environment nor line x location, they werenumber of productive tillers, head length, number ofseed/head, chlorophyll a, ratio of chlorophyll a/b, totalchlorophyll, and leaf thickness. The characters that havehigh heritability and wide genetic variability for the twoanalysis models were the number of spikelet.
Keywords
Genetic-environment interaction; heat tolerant; genetic variability; tropical agroecosystems.