Searching for resistance to ZYMV among Cucurbita maxima cultivars

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F20%3A10149489" target="_blank" >RIV/00027006:_____/20:10149489 - isvavai.cz</a>

Result on the web

<a href="https://www.actahort.org/books/1294/1294_30.htm" target="_blank" >https://www.actahort.org/books/1294/1294_30.htm</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17660/ActaHortic.2020.1294.30" target="_blank" >10.17660/ActaHortic.2020.1294.30</a>

Result language

angličtina

Original language name

Searching for resistance to ZYMV among Cucurbita maxima cultivars

Original language description

Fruits of the winter squash Cucurbita maxima Duchesne with orange flesh are very popular for their wide use in cooking and high carotene content. Commonly planted cultivars are highly susceptible to Zucchini yellow mosaic virus (ZYMV). Fruits from infected plants are dark green-spotted, and their shelf life is shortened. The most effective way to protect against ZYMV is growing resistant cultivars. Seeds from 23 cultivars and new breeding lines of C. maxima were gathered. Their level of resistance to ZYMV was evaluated by a comparison of the relative virus concentrations in plants after mechanical inoculation with the highly virulent Czech ZYMV-H strain and by evaluation of symptoms. The relative concentration of ZYMV protein in the leaves was calculated from the virus titre determined by ELISA. The results demonstrated that squashes Invincible F1 and Star 7026 F1 are highly resistant to ZYMV -- the virus concentration in their leaves was zero, and there were no ZYMV symptoms on their leaves and fruits. However, a biological test and electron microscopy proved the presence of ZYMV in the plants. This means that the virus multiplied in these plants at a low rate. Other winter squashes Amord F1, Grey Queen and the new breeding line 322/17 were assessed as moderately resistant. The rest of the evaluated cultivars were tolerant or susceptible to ZYMV. An experiment crossing Invincible F1 with the popular susceptible winter squash Hokkaido was performed. The progenies showed that the resistance of the parental plants is coded recessively in the genome. The results are further discussed.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

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

Name of the periodical

Acta Horticulturae

ISSN

0567-7572

e-ISSN

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Volume of the periodical

1294

Issue of the periodical within the volume

17 November 2020

Country of publishing house

BE - BELGIUM

Number of pages

6

Pages from-to

239-244

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85097273670