Wild Lactuca saligna: a rich source of variation for lettuce breeding

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F16%3A33160312" target="_blank" >RIV/61989592:15310/16:33160312 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Wild Lactuca saligna: a rich source of variation for lettuce breeding

Original language description

Substantial progress in modern breeding of lettuce (Lactuca sativa L.) has involved exploitation of wild related species as donors of valuable traits, e.g. resistance. Willow-leaf lettuce (Lactuca saligna L.), a strategic species in lettuce breeding, is largely distributed all over the world, but only a limited area of its natural distribution is represented by accessions in world germplasm collections. Knowledge of its biodiversity is rather limited. Complex research activities were developed in the Czech Republic in cooperation with some other countries (e.g. Israel). Original data on ecology and distribution of L. saligna in Europe, North America and Israel were obtained, new seed samples were acquired for further studies. Large variation of morphological and phenological traits among samples originating from different eco-geographic conditions was recognized. New sources of resistance to economically important races of lettuce downy mildew (Bremia lactucae) and powdery mildew (Golovinomyces cichoracearum) were identified. Resistance against B. lactucae is considered as a nonhost resistance. Samples originating from various eco-geographical conditions (Near East vs. Mediterranean Basin) differ significantly in their molecular polymorphism (AFLP) and they are genetically different. Natural interspecific hybrids between L. saligna and some other related Lactuca spp. (L. serriola) were recognized. F1 hybrids raised from the controlled hybridization of L. saligna with L. sativa were released, F1 progeny were identified by morphological traits and confirmed by isozymes. Recently, L. saligna has been more widely used in commercial lettuce breeding.

Czech name

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Czech description

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Type

C - Chapter in a specialist book

CEP classification

EF - Botany

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Book/collection name

Enhancing Crop Genepool Use: Capturing Wild Relative and Landrace Diversity for Crop Improvement

ISBN

978-1-78064-613-8

Number of pages of the result

15

Pages from-to

32-46

Number of pages of the book

469

Publisher name

CAB International

Place of publication

Wallingford

UT code for WoS chapter

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