International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 2
First page : (605) Last page : (613)
Article doi: : http://dx.doi.org/10.18782/2320-7051.5402

Screening of Rice (Oryza sativa L.) Genotypes for Early Vigour under Dry Direct Sowing Condition

P. Lora Anusha*, V. Umamahesh, P. V. Ramana Rao and R. Somla Naik

Department of Crop Physiology, S.V. Agricultural College, Tirupati-517502, A.P
*Corresponding Author E-mail: loraanu44@gmail.com
Received: 7.08.2017 | Revised: 16.09.2017   | Accepted: 21.09.2017  

 

 ABSTRACT

A laboratory experiment was conducted in completely randomized design replicated five times with thirty six aerobic rice genotypes at department of crop physiology S.V. Agricultural College, Tirupati during kharif, 2015. The screening was conducted both in petriplate (0, -5 and -10bars) and paper roll method (0, -1 and -2bars) at three different concentrations through Poly ethylene glycol (PEG) induced moisture stress. A significant variation was observed among the genotypes for germination percentage, seedling vigour index and co-efficient of velocity of germination. From the results Eight genotypes were taken as early vigorous viz., JGL-11727, JGL-20171, MTU-7029, MTU-1010, NLR-40024, NLR-33671, NLR-3042, NLR-4002 and two genotypes were late vigorous viz., MTU-1112 and MTU-1075 were selected for dry direct sowing based on their performance evaluated through germination percentage, seedling vigor index and co-efficient of velocity of germination. Early vigorous genotypes also performed well under field condition for yield.

Key wards: Direct seeded rice– seedling vigor –PEG induced screening

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Anusha, P.L., Umamahesh, V., Rao, P.V. R. and Naik, R.S., Screening of Rice (Oryza sativa L.) Genotypes for Early Vigour under Dry Direct Sowing Condition, Int. J. Pure App. Biosci.6(2): 605-613 (2018). doi: http://dx.doi.org/10.18782/2320-7051.5402