Journal ArticleDOI
The inheritance of flowering time inAmaranthus species
P A Kulakow,S K Jain +1 more
TLDR
Flowering time was closely associated with plant form, inflorescence development, and numerous other traits which differentiate the crop and weed species, providing interesting insights into evolutionary changes under domestication and dispersal from lower to higher latitudes.Abstract:
The inheritance of flowering time was studied in a cross between an early flowering weedy species,Amaranthus retroftexus L., and a late flowering related crop species,A. cruentus L. Segregation ratios were scored in four successive backcrosses of the hybrid to the crop species (BC1 to BC4) and in backcross-derived generations (BC2F2, BC2F3) grown under 8-hr and 16-hr photoperiods and 30/20°C day/night temperatures in growth chambers, and under field and greenhouse environments during summer months at Davis. One major gene for earliness (Ea), dominant over late flowering, was identified conclusively under the 8-hr regime and in some genetic backgrounds under field conditions. Based on segregation patterns within individual progenies and the observed transgressive segregation, a model of three genes seemed to explain all of the ratios consistently. Evidence of segregation distortion at theEa locus, resulting in the deficiency of early individuals, and some role of epistatic interactions among the three postulated major genes requires further testing based on more isogenic and specific progeny materials. Flowering time was closely associated with plant form, inflorescence development, and numerous other traits which differentiate the crop and weed species. This association provides interesting insights into evolutionary changes under domestication and dispersal from lower to higher latitudes.read more
Citations
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Book ChapterDOI
Genetic Resources and Breeding of Amaranthus
D. M. Brenner,David D. Baltensperger,Peter Kulakow,J. W. Lehmann,Robert L. Myers,M. M. Slabbert,B. B. Sleugh +6 more
Journal ArticleDOI
From zero to hero: the past, present and future of grain amaranth breeding
D. C. Joshi,Salej Sood,Rajashekara Hosahatti,Lakshmi Kant,Arunava Pattanayak,Anil Kumar,Dinesh Yadav,Markus G Stetter +7 more
TL;DR: The history of amaranth and recent advances in genomic tools are reviewed and a concrete perspective how novel breeding techniques can be implemented into breeding programs are given to improve the nutritional quality and climate resilience of future cropping systems is given.
Journal ArticleDOI
Realizing the potential of grain amaranth
TL;DR: Agarwal et al. as mentioned in this paper realized the potential of grain amaranth and proposed a new potential for an old crop by using it as a substitute for wheat and corn.
Journal ArticleDOI
Genetics and breeding for climate change in Orphan crops.
TL;DR: In this article, the importance of breeding orphan crops under the increasing effects of climate change, highlight existing gaps that need to be addressed and share some lessons to be learned from major crops.
Journal ArticleDOI
Genetics of grain amaranths : 4. Variation and early generation response to selection in Amaranthus cruentus L.
Peter Kulakow,S. K. Jain +1 more
TL;DR: Evidence for significant inbreeding depression in comparisons of F1 and F2generation means suggested some role of nonadditive gene action for days to first anthesis, leaf length, leaf width, petiole length, plant height, panicle length, and panicle weight in amaranth cultivation areas.
References
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Book
Evolution of Crop Plants
TL;DR: Kiwifruit sisal amaranths cashew pistachio kapok pineapple tea hemp hop beets quinoa safflower sunflower lettuce sweet potato turnip swede cabbage mustards radish cucumber, melons and watermelons squash, pumpkins minor curcubits yams blueberry, cranberry rubber cassava oats finger millet barley rice pearl millet sugar cane rye foxtail millet sorghum triticale wheats maize minor cere
Book
Plant variation and evolution
David Briggs,Stuart Max Walters +1 more
TL;DR: This article reviewed recent progress in its historical context, showing how hypotheses and models developed in the past have been critically tested, and the remarkable insights that molecular biology has given us into the processes of evolution in populations of cultivated, wild and weedy species, the threats of extinction faced by many endangered species and the wider evolutionary history of the flowering plants as revealed by cladistic methods.
Related Papers (5)
Genetic variation in outcrossing rate and correlated floral traits in a population of grain amaranth ( Amaranthus cruentus L.)
H. Hauptli,Subodh Jain +1 more