In Vitro Tissue Culture S tudies in Sunflower (Helianthus spp.)

Authors : Nazan DAGUSTU

Pages : 13-21

View : 14 | Download : 8

Publication Date : 2018-01-30

Article Type : Research Paper

Abstract :Sunflower insert ignore into journalissuearticles values(Helianthus annuus L.); is the fourth mos t important oilseed crop in the world in terms of total yearly production, after soybean, rapeseed, and groundnut. The classical breeding s tudies made from 1880 until today have been focused on major characters, such as high fat, pes ts and diseases resis tance. The narrow genetic base in sunflower causes a major problem at breeding and selection of desired sunflower lines eg. cytoplasmic male s terility, disease and insect pes t resis tance, fertility-res toration, agronomic and seed-oil characteris tics, drought tolerance, protein content, imidazolinone resis tance and fatty acid composition. The growth or maintenance of cells, tissues, organs, and their components under defined physical and chemical conditions in vitro described as plant tissue culture, is an important tool in both basic and applied researches as well as in commercial application. The firs t and important s tep of tissue culture is development of in vitro regeneration sys tem. Researchers have successful attempts by various explants, such as immature embryo mature embryo, meris tem, anther, hypocotyl, protoplas t, cotyledonand embryo sac. Although the specific techniques like, embryo culture, organogenesis, somatic embryogenesis have been succesfully used, anther culture, microspore culture ovule cultureneeds to be improved.
Keywords : sunflower, plant tissue culture, in vitro regeneration