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Subject: Biochemistry × Author: Hitesh × End date: 2007 × Start date: 2007 × Type: Thesis ×
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    ThesisItemOpen Access
    Biochemical composition of a wheat genotype as affected by stages of nitrogen application
    (CCSHAU, 2007) Hitesh; Shashi Madan
    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.
  • Thumbnail Image
    ThesisItemOpen Access
    Biochemical composition of a wheat genotype as affected by stages of nitrogen application
    (CCSHAU, 2007) Hitesh; Shashi Madan
    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