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<p>Physiochemical response of papaya genotypes exposed to low temperature regimes</p>

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Title Statement <p>Physiochemical response of papaya genotypes exposed to low temperature regimes</p>
 
Added Entry - Uncontrolled Name Maurya, Naveen Kumar; ICAR-Indian Agricultural Research Institute, Pusa, New Delhi-110012
Goswami, Amit Kumar; ICAR-Indian Agricultural Research Institute, Pusa, New Delhi-110012
Goswami, Suneha ; ICAR-Indian Agricultural Research Institute, Pusa, New Delhi-110012
Singh, Sanjay Kumar; ICAR-Indian Agricultural Research Institute, Pusa, New Delhi-110012
Prakash, Jai ; ICAR-Indian Agricultural Research Institute, Pusa, New Delhi-110012
Chinnusamy, Viswanathan ; ICAR-Indian Agricultural Research Institute, Pusa, New Delhi-110012
Talukdar, Akshay ; ICAR-Indian Agricultural Research Institute, Pusa, New Delhi-110012
Behera, Tusar Kanti; ICAR-Indian Agricultural Research Institute, Pusa, New Delhi-110012
Pradhan, Satyabrata ; ICAR-Indian Agricultural Research Institute, Pusa, New Delhi-110012
 
Uncontrolled Index Term Abiotic stress; Carica papaya; Cold stress; Mountain Papaya; Photosynthetic rate; Proline content; Stomatal conductance; Vasconcellea cundinamarcensis
 
Summary, etc. <p style="text-align: justify;">Susceptibility to low temperature stress is the major threat to papaya cultivation. Here, we studied a low temperature stress tolerance in papaya plant. We have investigated the effect of different low temperature regimes, 28°/18°C (day/night) to 16°/06°C (day/night) with a gradual decrease of 2°C on every two days and one set with direct exposure to the low temperature of 18°/08°C (day/night), called the acclimatized plant, in five diverse papaya genotypes (Pusa Nanha, Red Lady P-7-2, P-7-9, and P-7-14) and cold tolerant wild relative of cultivated papaya genotype (<em>Vasconcellea cundinamarcensis</em> V.M. Badillo) under controlled regulated conditions. It was observed that there were significant variations in the physiological and biochemical parameters like photosynthetic gas exchange parameters, chlorophyll content, fluorescence parameters, relative water content (RWC), membrane stability index (MSI), total sugars content, total soluble proteins content, lipid peroxidation, and proline accumulation in leaf tissues. Maximum stomatal conductance, chlorophyll fluorescence, RWC, MSI, total sugars, total soluble proteins, proline and lowest MDA contents were observed in <em>Vasconcellea cundinamarcensis</em> followed by inbred P-7-9 as compared to other genotypes under low temperature stress. Among all the papaya genotypes, P-7-9 showed more adaptability to low temperature stress and it further give new insights for developing low temperature tolerant papaya genotypes, especially under changing climate situations.</p>
 
Publication, Distribution, Etc. Indian Journal of Experimental Biology (IJEB)
2022-08-01 00:00:00
 
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http://op.niscair.res.in/index.php/IJEB/article/view/47088
 
Data Source Entry Indian Journal of Experimental Biology (IJEB); ##issue.vol## 60, ##issue.no## 08 (2022): IJEB [AUGUST 2022]
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJEB/article/download/47088/465552198
http://op.niscair.res.in/index.php/IJEB/article/download/47088/465552199
http://op.niscair.res.in/index.php/IJEB/article/download/47088/465552200