Phosphorus uptake, yield and quality parameters in wheat (Triticum aestivum L)
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Date
2010
Authors
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Publisher
CCSHAU
Abstract
The present experimentation was carried out on ten wheat genotypes namely WH-147,
Raj-4083, WH-1021, WH-1022, WH-1025, LOK-1, NW-2030, C-306, PBW-343 and PBW-550 with
three level of phosphorus i.e. 20%, 50% and 100% in order to identify the genotypes efficient in
phosphrous uptake and utilization, the effect of phosphrous doses on quality parameters of wheat grains
and the root morpho-physiological traits associated with efficient phosphors uptake. The investigation
involved pot studies under screen house conditions during the year 2008-09.Data was recorded for dry
weight of root,stem and leaves,physiological parameters(Chlorophyll fluorescence, Assimilation rate,
Transpiration rate, Stomatal conductance, Water use efficiency ),days to heading, days to Anthesis,
days to Maturity, Grain Filling duration, Plant Height, No. of productive tillers/plant, biomass/plant,
Spike length, Grain yield/plant Test weight, Phosphorus cont Quality parameter in grain . In this study
day to heading, anthesis, maturity and grain filling duration got delayed at low P level (20%) as
compared to 100% P. Raj-4083, WH-1022, NW-2030, WH-1025, C-306, PBW-343 and PBW-550
showed significant difference for root, shoot and leaf dry weight at different level of phosphorus during
anthesis stage. WH-147 and Raj-4083 was better in maintaining WUE at different P level. Acid and
alkaline phosphate activity increased with decrease in the P. Activity of both enzymes was highest in
NW-2030. For majority of the yield components the genotypes Raj-4083, WH-147, LOK-1,
NW-2030 and PBW-550 performed better at different P levels. Among all these seedling characteristics
root length root/ shoot dry weight and no. of secondary lateral roots increased at 20% P, but shoot
length decreased at 20% P. No. of secondary lateral roots was found as major determinant of P
deficiency.
Description
Keywords
Vegetative propagation, Wheats, Planting, Genotypes, Developmental stages, Drying, Grain, Yields, Acidity, Biological development