National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Sporophytic plants having gametophytic chromosome number are termed as haploid. These plants can be produced either spontaneously in nature or by in vitro or in vivo induction technique. By doubling chromosome number of haploid either spontaneously or artificially, double haploid (DH) could be produced. Double haploid are homozygous and this homozygosity is achieved in one generation by using DH production systems. This production system is used for fixation of heterosis. Genetic map construction is relatively easy with DH population. DH can be used as new variety or as parental inbred line in self-pollinated crops and cross-pollinated crops respectively. Haploids can be used for isolation of mutants, particularly where the mutant allele is non-functional in diploid. True breeding diploid transgenic plants can be produced in one step, if haploids are transformed directly following doubling of chromosomes. Using biotechnological tools along with conventional methods, it is possible to achieve main goals of crop improvement in short time. The present paper discusses various developments in haploid breeding with respect to economically important ornamental species. This review article describes the advances achieved, and provides practical tips that would allow researchers new to the field to establish a new field of research to derive haploid plants for breeding programs of ornamental crop improvement.
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