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STUDIES ON PHYSIOLOGICAL PARAMETERS IN AROMATIC RICE DURING KHARIF

KrishiKosh

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Title STUDIES ON PHYSIOLOGICAL PARAMETERS IN AROMATIC RICE DURING KHARIF
 
Creator MAHESH KUMAR, MEHTA
 
Contributor NARENDER REDDY, S.
 
Subject rice, developmental stages, genotypes, yields, grain, aromatic compounds, biological development, planting, area, leaf area
PHYSIOLOGICAL PARAMETERS, AROMATIC RICE, , KHARIF
 
Description The present investigation entitled “studies on physiological parameters in aromatic
rice during kharif” was conducted at the Students Farm, College of Agriculture,
Rajendranagar, Hyderabad, during kharif 2010-2011. The field trial was conducted
following randomized block design with three replications and eight aromatic rice
genotypes viz. PUSA-1121, Chittimuthyalu, Godavari Isukalu, RNR-19186, RNR-2378,
RNR-2354, RNR-2465 and Sumathi. In this experiment, the morphological traits such as
plant height, tillering capacity, number of leaves and root parameters and physiological
indices such as LAI, CGR, NAR, RGR, LAD, AGR, LAR, SLW and SLA were evaluated
at 15 days interval. Phenological parameters were taken such as days to 50% flowering,
days to complete flowering and days to maturity and morphological indices (flag leaf area)
were evaluated at flowering stage.
Results of morphological characteristics showed that highest and lowest plant
heights were recorded in Chittimuthyalu and RNR 2378, respectively. Maximum number
of tillers and number of leaves were recorded by variety RNR 2354. Root parameters like
root length, root volume and root weight were highest in the variety RNR 2354 and lowest
in Pusa1121. There was significant positive correlation between tiller number and root
parameters with grain yield. More number of days to 50% flowering, days to complete
flowering and days to maturity were recorded for the variety Sumathi and minimum in
Chittimuthyalu. Combined leaf area of first three leaves from the top found significantly
different for all aromatic rice cultivars and maximum combined leaf area of first three
leaves from the top was found in the variety RNR 2354 and minimum was recorded by the
variety Pusa1121.
Results showed that maximum LAI, CGR, NAR, RGR, LAD, LAR and SLW were
recorded for the variety RNR 2354. Highest AGR was recorded with variety
Chittimuthyalu and lowest was recorded with RNR 2354 and RNR 2465. Highest SLA was
recorded in RNR 2378 and minimum SLA was recorded in RNR 2354. Yield was
significantly and positively correlated with LAI, CGR, NAR, RGR, LAD and SLW. Thus
the highest dry matter production was recorded in variety RNR 2354 while minimum dry
matter production was recorded for the variety Pusa 1121.
Maximum SPAD values were recorded for variety RNR 2354 throughout the crop
growth period and minimum was found for the variety Chittimuthyalu whereas harvest
index and nitrogen harvest index were recorded maximum in the variety RNR 2354 and
minimum in Pusa 1121. Harvest index, Flag leaf area and SPAD values were positively
associated with grain yield in aromatic rice.
Highest grain yield was recorded in variety RNR 2354 and the lowest grain yield
was recorded in Pusa 1121. The aromatic rice varieties differed significantly with respect to
yield and yield components like number of panicles per meter square, number of spikelets
per panicle, 1000 grain weight, filled grain percentage and harvest index which were
significantly and positively associated with grain yield.
 
Date 2016-05-31T11:34:02Z
2016-05-31T11:34:02Z
2011
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/66471
 
Language en
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY