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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

C - Kapitola v odborné knize

CEP obor

EF - Botanika

OECD FORD obor

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Projekt

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Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název knihy nebo sborníku

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

ISBN

978-1-78064-613-8

Počet stran výsledku

15

Strana od-do

32-46

Počet stran knihy

469

Název nakladatele

CAB International

Místo vydání

Wallingford

Kód UT WoS kapitoly

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