Perakitan dan Pengembangan Padi Varietas Unggul Baru (VUB) Toleran Cekaman Lingkungan
Abstract
Agricultural development in Indonesia began to be directed to marginal land as a result of reduced fertile land that was driven by the interests of transportation and housing. Land in question is swamp land affected by salt so many obstacles that must be faced if the land should be used for the cultivation of plants such as low soil fertility. The method to overcome the problems on marginal land is to utilize plants that are tolerant of environmental stress. To support the sustainability of rice production in the land while supporting the increase of national rice production, there is a need for adaptive varieties with environmental conditions in the land. The rice breeding program aims to assemble high yielding varieties that have high yield potential and are adaptive to environmental stresses by utilizing biodiversity in rice gene pool especially from Oryza sativa group. The initial stage in the assembly of varieties is the identification of germplasm as a cross to combine desirable properties into a breeding population. Crossing is done by a single cross, cross-peak, cross-cross and cross-back method. The population of the crosses subsequently became the material of selection of various important properties for upland rice with the method of bastar population and pedigree method. The results showed that from 10 varieties as germplasm, V5 varieties were stress resistant varieties of Fe shown with good vegetative growth that has the highest plant height of 48.67 cm and V1 varieties more resistant to high salinity with good vegattif growth that has high plant teritinggi 36.36 cm
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Keywords— Crosses, Environmental tapping, Rice, SelectionReferences
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