Rice Genomics and Genetics - page 6

Rice Genomics and Genetics 2015, Vol.6, No.1, 1-5
3
3 Conclusion
The correlation analysis revealed that the characters
viz.,
days to fifty percent flowering, plant height,
number of productive tillers per plant, hundred
grain weight, kernel length, kernel breadth, kernel
L/B ratio, kernel breadth after cooking and zinc
content exhibited positive and significant
association with grain yield. Therefore selection
pressure exerted on the positive side of these traits
will automatically increase the yield. Iron content
showed negative correlation with yield but zinc
showed positive correlation with yield in TRY (R) 2
× Mapillai Samba cross combination. Here plant
height and days to fifty percent flowering and zinc
content exhibited significant and positive
association in above two cross combinations. Zinc
content had positive correlation with yield. So TRY
(R) 2×Mapillai Samba cross used simultaneous
improvement of zinc with grain yield.
References
Chakraborty S., Pradip K., Biswajit G., Kalyan V., and Bhubaneswar
Barman., 2010, Quantitative genetic analysis for yield and yield
components in boro rice (
Oryza sativa
L.), Nat. Sci. Biol., 2(1):
117-120
Kalaimaghal R., 2011, Studies on genetic variability of grain iron and zinc
content in F
2,
F
3
generation of rice (
Oryza sativa
L.),
M.Sc. (Ag.)
Thesis
(Unpubl.), TNAU, Coimbatore
Krishnaveni B., and Shobha Rani. N., 2006, Association of grain yield with
quality characteristics and other yield components in rice. Oryza, 43(4):
320-322
Krishna L., Raju Ch D., and Raju. Ch.S., 2008, Genetic variability and
correlation in yield and grain quality characters of rice germplasm, The
Andhra Agric. J., 55(3):
27-279
Nagesh, Ravindrababu V., Usharani G., and Dayakar Reddy T., 2012, Grain
iron and zinc association studies in rice (
Oryza sativa
L.) F
1
progenies,
Archives of Appl. Sci. Res., 4 (1): 696-702
Purusothaman R., 2010, Genetic analysis for high iron and zinc content in
rice (
Oryza sativa
L.) grains, M.Sc., (Ag.) Thesis (Unpubl.), TNAU,
Coimbatore
1,2,3,4,5 8-9,10-11,12
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