Studies on physiological parameters in tissue culture and sucker plants of date palm (Phoenix dactylifera L.) cultivars
Keywords:
Date palm, Photosynthesis, sucker, tissue culture, arid conditionsAbstract
Production of planting material in date palm ( Phoenix dactylifera L.) is the major constraint in commercial cultivation. This is on account of fact that rate of sucker production is limited and differ from variety to variety. Therefore, for production of planting material, recourse to tissue culture has been taken. Presently, at global level, few organizations are producing tissue culture plants but their performance is yet to be ascertained. Accordingly, the present study was planned to compare the photosynthetic parameters in 4 years old tissue culture/ sucker plants of date palm cv. Khalas and Khuneizi at vegetative growth stage. It was observed that in cv. Khuneizi the plants obtained from tissue culture/ sucker do not differ much in their photosynthetic parameters. However, in cv. Khalas the rate of photosynthesis at vegetative growth stage was higher as compared to plants obtained from sucker. Similar trend was observed for other parameters also such as transpiration rate, carboxylation efficiency and water use efficiency. Data on morphometry of leaflet also revealed that leaflets of cv. Khuneizi (Tissue culture and sucker) were at par but in cv. Khalas the leaflets of tissue culture plants were significantly larger than that of sucker plants. Therefore, our results demonstrate that plants obtained from tissue culture and sucker do not differ much in terms of photosynthetic parameters under arid conditions
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References
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