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Biochemical composition of a wheat genotype as affected by stages of nitrogen application

KrishiKosh

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Title Biochemical composition of a wheat genotype as affected by stages of nitrogen application
 
Creator Hitesh
 
Contributor Shashi Madan
 
Subject Wheat, Gliadins, Glutenin, Seed rate, Split dose of nitrogen, Protein, Quality
 
Description The present investigation was conducted to study the effect of seed rates and stages of nitrogen
application. WH-711 wheat variety at three seed rates i.e., 100, 112.5, 125 kg/ ha was sown under four
different nitrogen splittings i.e., T1- ½ dose at sowing + ½ dose at CRI (Ist irrigation), T2 – 1/3rd dose at
sowing + 2/3rd dose at first node (40-45 days), T3- 1/4th dose at sowing +1/2 at first node + 1/4th dose at
anthesis (85-90 days) and T4- 1/3rd dose at sowing (2/3rd dose – 6.9 kg N ) at first node + 6.9 kg N as
urea spray (3% ) at post anthesis (95-100 days). Treatment without nitrogen (control) was also included
for comparison. Analysis of data revealed that splitting of recommended dose of nitrogen improved the
grain quality by increasing the quality parameters viz. hectoliter weight, ß- carotene content, wet, dry
gluten content and total protein content. Higher protein content of 12.68% was obtained at highest value
of seed rate (125 kg/ha) and split dose of nitrogen T4. However, sedimentation value, starch, amylose
content remained unaffected at different seed rates and varying stages of N-application. The nitrogen
content and phosphorous content increased while the sulphur content remained unaffected with different
seed rates and split dose of N-application. A progressive increase in total sugars, reducing sugars and
non-reducing content was also observed at various stages of N-application. The lysine content and true
protein content also increased with split dose of N-application; however both these parameters were not
affected with different seed rate and various stages of N-application. Among different protein fractions,
the albumin and globulin fractions increased with split dose of N while gliadins and glutenins remained
unchanged The polypeptide pattern of gliadins and glutenins remained unchanged by different seed rates
and stages of N-application. Grain yield was significantly higher at 125 kg/ha and 112.5 kg/ha as
compared to 100 kg/ha seed rate. Splitting of recommended dose of N marginally increased the grain
yield by 4.1% (43.5 q/ha) than the grain yield obtained (41.7 q/ha) at T1.
MAJOR ADVISOR DEGREE HOLDER
 
Date 2016-11-28T15:20:50Z
2016-11-28T15:20:50Z
2007
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/87901
 
Language en
 
Format application/pdf
 
Publisher CCSHAU