Mesophyll carbon intake concentrations exhibited high in citrus rootstocks grown on peat moss under water stress environment

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Research Paper 01/03/2017
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Mesophyll carbon intake concentrations exhibited high in citrus rootstocks grown on peat moss under water stress environment

Zaheer Mahmood Jarral, Nadeem Akhtar Abbasi, Khalid Mahmood Qureshi, Muhammad Kausar Nawaz Shah
J. Bio. Env. Sci.10( 3), 241-248, March 2017.
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The stomatal conductance (gs), photosynthesis rate (Pn), intercellular CO2 conc. (Ci), chlorophyll and morphogeneic data was collected from the 12 month old citrus rootstocks (Rough lemon, Gada dehi, Flying dragon, Brazilian sour orange, Citron citrange, Carrizo citrange, Rubidoux trifoliate, Savage citrange, Yuma citrange and Citromelo-1452) grown in peat moss under 100, 70, 40 and 10 %,s available water capacities in glass house. Pn, gs, and E rates were decreased down with increase in water stress level. Rough lemon, Gada dehi and Savage citrange mesophyll Ci was not that  much altered with change in water conc. However, Carrizo citrange, Citron citrange, Citromelo-1452 and Brazilian sour orange mesophyll carbon remained higher than that of Chlorophyll, Pn and gs ratios. Ci intake enhanced on 15 days and reached maximum in 45 days especially on 10% FC. The osmoprotactant cholorophyll conc. was opted as a drought resistant strategy (DRS) especially by trifoliate. Moreover, plant biomass of Keen sour orange, Rough lemon and Gada dehi was high comparatively even under stress.


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