Effect of salinity (NaCl) on some morpho-anatomical aspects of wheat
2001
Gill, R.G.
Two wheat (Triticum aestivum L.) genotypes accession 234/2 and Potohar were used in the present investigation, and the design applied was Completely Randomized with two factor factorial arrangement. Three treatments (0,100 and 200 mol m-3) including control of salinity were imposed after 15 clays of germination. The plants were irrigated throughout the experiment duration with half strength of Hoagland's solution. Data were collected at the booting stage and various morphological parameters like culm length, root length Number of tillers/plant dry weight/plant and leaf area were recorded. It was observed that all the morphological parameters decreased as the level of salinity increase. Genotype accession 234/2 gave better results than Potohar. Results relating to grain yield indicated an inverse relation with increasing salinity in the growth medium. The salinity mostly decreased, spike length- and 100-grain weight. The effect of NaCl salinity was most on Potohar (salt sensitive) than accession 234/2 (salt tolerant). Anatomical studies revealed that root, culm and leaf epidermis thickness, epidermal cell area, vascular bundle size, were decreased with increase of salinity. In case of leaf interveinal distance was decreased with increase of salinity, size of stomata was decreased with increasing salinity, while number of stomata was increased with increase of salinity. Although, salt stress decreased the growth, yield and anatomical attributes but accession 234/2 performed better than Potohar wheat in all the above said attributes at all the saline conditions.
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