Articles
Variability in crosses for pear rootstocks adaptation to climate changes
Article number
1366_50
Pages
409 – 412
Language
English
Abstract
Since its creation, INRAE Angers has a long tradition and experience on rootstock breeding for pear.
The pear rootstock Pyriam was released in 1997 showing straight habit in nursery, fire blight and calcareous soil tolerance and when grafted by Williams good compatibility and high productivity.
This paper presents the outputs of the program developed from 1996 to 2022 which mainly focused on dwarfing or/and adaptation to global warming especially hot summer, drought and iron-chlorosis.
The main selection criteria have been rooting rate, compatibility with Williams, induced vigor, tolerance to fire blight and drought.
During this period, 25 crosses have been performed: 10 were focused on drought tolerance including 4 combined with dwarfing.
After a long selection process, some promising genotypes are now propagated for further testing by our private partner CEP-INNOVATION. Besides, 18 open pollinations of drought tolerance prospected species gave 1905 seeds.
This paper describes the different steps of selection for hot summer and water shortage tolerance program.
It also highlights the great genetic variability observed for all important agronomic traits.
The pear rootstock Pyriam was released in 1997 showing straight habit in nursery, fire blight and calcareous soil tolerance and when grafted by Williams good compatibility and high productivity.
This paper presents the outputs of the program developed from 1996 to 2022 which mainly focused on dwarfing or/and adaptation to global warming especially hot summer, drought and iron-chlorosis.
The main selection criteria have been rooting rate, compatibility with Williams, induced vigor, tolerance to fire blight and drought.
During this period, 25 crosses have been performed: 10 were focused on drought tolerance including 4 combined with dwarfing.
After a long selection process, some promising genotypes are now propagated for further testing by our private partner CEP-INNOVATION. Besides, 18 open pollinations of drought tolerance prospected species gave 1905 seeds.
This paper describes the different steps of selection for hot summer and water shortage tolerance program.
It also highlights the great genetic variability observed for all important agronomic traits.
Authors
M.H. Simard, C. Cattaneo, D. Lanoue, M. Boucourt, M.L. Genouël, R. Dolcet-Sanjuan, L. Asin, J. Bonany, B. Florens, J.C. Michelesi
Keywords
pear rootstocks, Pyrus species, variability, ploidy, dwarfing, iron-chlorosis, graft-compatibility, fire blight
Groups involved
- Division Plant-Environment Interactions in Field Systems
- Division Temperate Tree Fruits
- Division Temperate Tree Nuts
- Division Tropical and Subtropical Fruit and Nuts
- Division Horticulture for Development
- Division Vine and Berry Fruits
- Division Precision Horticulture and Engineering
- Commission Agroecology and Organic Farming Systems
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