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Morphological and physiological characterization of guava (Psidium guajava) under hot-arid zone of Rajasthan

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Title Morphological and physiological characterization of guava (Psidium guajava) under hot-arid zone of Rajasthan
Not Available
 
Creator SANJAY KUMAR SINGH
S K MALHOTRA
R BHARGAVA
R S SINGH
ANIL KUMAR SHUKLA
 
Subject Arid environment
Chlorophyll
Growth
Guava
Leaf water
Photosynthesis
 
Description Not Available
This study was carried out to investigate morpho-physiological and productivity characteristics of four genotypes of five years old guava (Psidium guajava L.) trees, grown under hot-arid zone of Rajasthan. Preliminary investigation indicated that all four cultivars of guava could survive except merely 10.0% field mortality in guava cv. L-49. The maximum increase in plant height (25.93%) and number of new leaves/branch (4.66) over six months of planting were recorded in Sweta, followed by Lalit, while during fruiting (August for rainy season guava) highest number of new shoot sprouts/branch was found in Allahabad Safeda, followed by Sweta. Lalit and Sweta also produced substantial number of new leaves/branch during fruiting, than the other cultivars. Chlorophyll a (Chla), chlorophyll b (Chlb) and total chlorophyll (Chltotal) contents were highest in L-49, followed by Lalit. The leaves produced on Sweta received lesser photosynthetically active radiations (PAR) but had highest leaf area (80.91 cm2), specific leaf area (SLA; 36.61 cm2/g) and relative water content (RWC; 60.19%). Although L-49 had thicker leaves (lowest SLA; 33. 29 cm2/g), indicating better adaptation towards resource poor environment but other cultivars of guava also had SLA at par among other three cultivars. Allahabad Safeda received maximum PAR (1066 μE/m2/s), also had highest internal CO2 concentration (Ci; 207.76 μmol/mol), while highest net photosynthesis rate (PN; 10.84 μmol CO2/m2/s), carboxylation efficiency (CE) and water use efficiency (WUE) were observed in Lalit. Guava cv. L-49, however, showed lowest PN (6.31 μmol C02/m2/s), Ci, WUE, transpiration rate (E) and CE. Thus, guava cultivars Sweta followed by Lalit performed better under hot-arid environment with better growth and physiological adaptation. L-49 was not found suitable for the area.
ICAR New Delhi
 
Date 2019-12-04T06:08:18Z
2019-12-04T06:08:18Z
2017-04-30
 
Type Research Paper
 
Identifier Singh, Sanjay Kumar, Malhotra, S K., Bhargava, R., and Singh, R,S. (2017). Morphological and physiological characterization of guava (Psidium guajava) under hot-arid zone of Rajasthan. Indian Journal of Agricultural Sciences. 87(4):491-495
0019-5022
http://krishi.icar.gov.in/jspui/handle/123456789/26925
 
Language English
 
Relation Not Available;
 
Publisher DKMA, ICAR, New Delhi