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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
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Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2019.8(6): 2450-2455
DOI: https://doi.org/10.20546/ijcmas.2019.806.292


Transgressive Segregation for Yield and Its Component Traits in Rice (Oryza sativa L.)
Reddyyamini1, K. Hariprasad Reddy1, V. Lakshmi Narayana Reddy1,Ramesh Babu1 and P. Sudhakar2
1Department of Genetics and Plant Breeding, S.V. Agricultural College,Tirupati, ANGRAU, AP, India
2Department of Crop Physiology, S.V. Agricultural College, Tirupati, ANGRAU, AP, India
*Corresponding author
Abstract:

Transgressive segregation produces hybrid progeny phenotypes that exceed the parental phenotypes. Unlike heterosis, extreme phenotypes caused by transgressive segregation are heritably stable. Maximum genetic variation in F2 generation provides the first opportunity for selection of individual plants, any one of which may end up into a new cultivar. F2 plants that surpassed the parental limits were observed in both the crosses for all the traits viz., plant height, number of panicles per plant, panicle length, number of grains per panicle, spikelet fertility, biomass per plant, grain yield per plant, harvest index and 1000 grain weight. High frequency of favourable transgressive segregants were observed for plant height and number of grains per panicle in the cross between BPT5204 and NLR33892, whereas BPT5204 x NLR33892 cross recorded higher number of desirable transgressive segregants spikelet fertility. Polygenic inheritance and high frequencies of favourable transgressive segregants for yield and its component traits indicates there is a lot of scope to bring in beneficial alleles into a single genotype through careful selection in later generations.


Keywords: Rice (Oryza sativa L.), Transgressive segregants
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How to cite this article:

Reddyyamini, B., K. Hariprasad Reddy, V. Lakshmi Narayana Reddy, P. Ramesh Babu and Sudhakar, P. 2019. Transgressive Segregation for Yield and Its Component Traits in Rice (Oryza sativa L.).Int.J.Curr.Microbiol.App.Sci. 8(6): 2450-2455. doi: https://doi.org/10.20546/ijcmas.2019.806.292