Indian Society of Genetics & Plant Breeding

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GENETIC VARIABILITY FOR NITROGEN UPTAKE IN WHEAT

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Twenty one genotypes and 21 hybrids of wheat were used to define the extent of variability
in nitrogen uptake at 45 days and 90 days of plant growth and at harvest (both in grains and
straw). Appreciable variability was recorded for nitrogen percentage and total plant
nitrogen (PN) at all the stages. The percentage of nitrogen decreased with maturity. The
varieties WH 157, UP 368, UP 270, Bulk 1858, CPAN 1281 and K 227 translocated more
nitrogen to the grains. Nitrogen harvest index showed positive correlation with grain
harvest index. The positive correlation ofPN with grain yield and biological yield appeared
to be stronger with advancement of growth. Using PN as a parameter, WH 157, WH 147, UP
270, 5 311 and hybrids HD 2122
X WH 147, WH 147 X WH 157 and HS 1138-6-4 X K 227 were
the promising genotypes.
  

Keywords: Variability, harvest index, nitrogen harvest index.

Info

Year: 1991
Volume: 51
Issue: 4
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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