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Application of Phenomics to Elucidate the Influence of Rootstocks on Drought Response of Tomato

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Title Application of Phenomics to Elucidate the Influence of Rootstocks on Drought Response of Tomato
Not Available
 
Creator Pratapsingh S. Khapte
Pradeep Kumar
Goraksha C. Wakchaure
Krishna Kumar Jangid
Giuseppe Colla
Mariateresa Cardarelli
Jagadish Rane
 
Subject phenomics
Solanum lycopersicum
rootstocks
drought
wild species
water use index
 
Description Not Available
The cultivation of nutritionally and economically important crops like tomato are often
threatened by dry spells due to drought as these crops largely depend on an assured water supply.
The magnitude and intensity of drought is predicted to intensify under climate change scenarios,
particularly in semi-arid regions, where water is already a scarce resource. Hence, it is imperative
to devise strategies to mitigate the adverse effects of drought on tomato through improvement
in the plant’s efficiency to utilise the moisture in the growth medium. Since the root is the entry
point for water, its intrinsic structure and functions play a crucial role in maintaining the soil–water–
plant continuum during moisture deficit at the rhizosphere. Grafting offers a great opportunity to
replace the root system of the cultivated tomato plants with that of wild species and hence provide a
rapid solution to modulate root system architecture in contrast to the time-consuming conventional
breeding approach. However, the success in developing the best graft combination of cultivated
tomato and rootstock depends on the source of rootstock and selection methods. In this study, we
used a high throughput phenomics facility to assess the efficiency of tomato, grafted on the rootstocks
of different genetic backgrounds, at different levels of moisture in the soil. Rootstocks included
tomato cultivars and the hybrids, derived from the crosses involving wild relatives, as donor parents.
Among the rootstocks, an interspecific (Solanum lycopersicum S. pennellii) derivative RF4A was
highly efficient in terms of productive use of water. The RF4A rootstock-grafted plants were more
conservative in water use with higher plant water status through relatively better stomatal regulation
and hence were more efficient in generating greater biomass under water stress conditions. These
plants could maintain a higher level of PSII efficiency, signifying better photosynthetic efficiency
even under water stress. The distinct response of interspecific rootstock, RF4A, to water stress can be
ascribed to the effective root system acquired from a wild parent (S. pennellii), and hence efficient
water uptake. Overall, we demonstrated the efficient use of a phenomics platform and developed a
protocol to identify promising rootstock–scion combinations of tomato for optimization of water use.
Not Available
 
Date 2023-04-07T08:29:07Z
2023-04-07T08:29:07Z
2022-06-26
 
Type Research Paper
 
Identifier Khapte, P.S.; Kumar, P.; Wakchaure, G.C.; Jangid, K.K.; Colla, G.; Cardarelli, M.; Rane, J. Application of Phenomics to Elucidate the Influence of Rootstocks on Drought Response of Tomato. Agronomy 2022, 12, 1529.
Agronomy 2073-4395
http://krishi.icar.gov.in/jspui/handle/123456789/76769
 
Language English
 
Relation Not Available;
 
Publisher MDPI Basel