Download PDF by S. Mohan Jain (ed.), S. K. Sopory (ed.), R. E. Veilleux: In Vitro Haploid Production in Higher Plants, Volume 2:
By S. Mohan Jain (ed.), S. K. Sopory (ed.), R. E. Veilleux (ed.)
Since the start of agricultural construction, there was a continual attempt to develop extra and higher caliber nutrition to feed ever expanding popula tions. either more advantageous cultural practices and better crop vegetation have al lowed us to divert extra human assets to non-agricultural actions whereas nonetheless expanding agricultural construction. Malthusian inhabitants predictions proceed to alarm agricultural researchers, specially plant breeders, to hunt new applied sciences that may proceed to permit us to supply extra and higher nutrition by way of fewer humans on much less land. either development of latest cultivars and improvement of latest high-yielding cultivars are universal targets for breeders of all plants. In vitro haploid creation is likely one of the new applied sciences that convey nice promise towards the aim of accelerating crop yields via making comparable germplasm to be had for lots of vegetation that used to be used to enforce one of many maximum plant breeding luck tales of this century, i. e. , the improvement of hybrid maize through crosses of inbred strains. one of many major functions of anther tradition has been to provide diploid homozygous natural strains in one new release, therefore saving many generations of backcrossing to arrive homozygosity by way of conventional capacity or in vegetation the place self-pollination isn't really attainable. simply because doubled haploids are corresponding to inbred strains, their worth has been preferred by means of plant breeders for many years. the hunt for normal haploids and strategies to urge them has been ongoing because the starting of the twentieth century.
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Extra info for In Vitro Haploid Production in Higher Plants, Volume 2: Applications
To culture anthers from anther-derived DHs. Brown et al. (1983) found variation in yield, plant height, days to flower and total alkaloids following a second cycle of anther culture of Nicotiana tabacum. J. Logue induced reductions in overall agronomic productivity equal in magnitude to that induced by the first cycle. De Paepe et al. (1983) found variation for several characters in N. sylvestris following several cycles of anther culture. Similar results have been reported in rice (Oono, 1981) and wheat (Parisi and Picard, 1986).
De Paepe et al. (1981) suggested that it was possible that there was some concealed variability in the Nicotiana sylvestris genotypes used as anther culture donors in their experiments, but that it did not explain the origin of "novel" variation such as a crumpled leaf phenotype that had never been seen in conventionally bred populations. , to culture anthers from anther-derived DHs. Brown et al. (1983) found variation in yield, plant height, days to flower and total alkaloids following a second cycle of anther culture of Nicotiana tabacum.
Wilson et al. (1978) noted that the period between the appearance of macroscopic callus and plant regeneration in barley anther culture was generally shorter for green than albino plants and that old calli rarely regenerated green plants. Schaeffer et al. (1984) suggested that losses in fertility that were often seen among rice anther culture-derived DHs could be minimised by decreasing the length of the culture phase. Devaux et al. (1993b) reported methylation variation in barley DHs derived from anther culture and the H.
In Vitro Haploid Production in Higher Plants, Volume 2: Applications by S. Mohan Jain (ed.), S. K. Sopory (ed.), R. E. Veilleux (ed.)