Screening rice genetic resources for heat tolerance

Mahantashivayogayy, A.K. and Lakkund, B.S. and Ramesha, M.S. and Ibrahim, M. and etc, . (2016) Screening rice genetic resources for heat tolerance. The Ecoscan, 10 (1-2). pp. 203-206.

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An investigation was carried out to screen the forty rice accessions received from the IRRI, India office, ICRISAT Hyderabad for heat tolerance during summer 2014 at Agriculture Research Station, Gangavathi, University of Agricultural Sciences, Raichur following RBD in three replications with four checks (Gangavati sona, IR-64, MTU 1010 and N- 22). Among the forty accessions screened for heat tolerance, the check N-22 (66.00 days) was the earliest to days to 50 per cent flowering followed by the accessions EC792177, EC792206, EC792239, EC792193 and EC792235 (80.00 days). Number of tillers per plant at maturity was significantly highest (22.50) in the accession EC792195 followed by the accessions EC792203 and EC792178 (17.30) which were on par with each other. Significantly highest thousand grain weight was recorded in the accessions EC792200 and EC792286 (25.00g). The significantly minimum per cent of chaffyness (0.40%) was recorded in the accession EC792183 followed by the accessions EC792179 (0.80%) and EC792216 (1.20%).The highest grain yield of 6167 kg/ha was recorded by accession EC792239 followed by EC792285 (5777 kg/ ha), EC792185 (5333 kg/ha), EC792179 (5000 kg/ha), EC792240 (4800 kg/ha) and EC792316 (4167 kg/ha) as against the checks MTU- 1010(2520 kg/ha), N-22 (2400 kg/ha), IR-64 (2283 kg/ha) and Local check Gangavati sona (1490 kg/ha).

Item Type: Article
Uncontrolled Keywords: Heat, Tolerance, Rice etc
Author Affiliation: All India Coordinated Rice Improvement Project, Agricultural Research Station Gangavathi - 583 227, INDIA
Subjects: Crop Improvement
Divisions: Other Crops
Depositing User: Mr T L Gautham
Date Deposited: 08 May 2018 06:05
Last Modified: 08 May 2018 06:05

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