Determination of drought resistance of grapevine on the base of morphobiological characters of leaf blade
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2023-07-08 19:13
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CODREANU, Valentin. Determination of drought resistance of grapevine on the base of morphobiological characters of leaf blade. In: Conservation of plant diversity, Ed. 3, 22-24 mai 2014, Chișinău. Chișinău: Gradina Botanica (Institut), 2014, Ediția 3, pp. 12-13. ISBN 978-9975-62-370-4.
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Conservation of plant diversity
Ediția 3, 2014
Simpozionul "Conservation of plant diversity"
3, Chișinău, Moldova, 22-24 mai 2014

Determination of drought resistance of grapevine on the base of morphobiological characters of leaf blade


Pag. 12-13

Codreanu Valentin
 
Botanical Garden (Institute) of the Academy of Sciences of Moldova
 
Disponibil în IBN: 17 mai 2019



Teza

Introduction As a result of the determination of the biometric values of 21 morphobiological characters   of the leaf blade at different species and cultivars of the genus Vitis L. (Codreanu, 1-4), 5 adaptive characters of the leaf blade which cause the drought resistance of grapevine have been established. Material and methods As material for the study served the mature leaves of the grapevine species and cultivars which were collected on 22.07.2011 and 24.07.2012 in the ampelographic collection ISPHTA, situated near Chișinău. Results and discussions The most drought-resistant are those species, cultivars and hybrids of grapevine at which: the dry mass of the leaf blade is higher; the percentage of the volume of the fresh and dried leaf blade from the area of the fresh and dried leaf blade is higher; the degree of succulence and the degree of sclerophylly of the leaf blade is higher. On the base of these 5 adaptive morphobiological characters of the leaf blade, the method for determining the drought resistance of grapevine has been developed. By this method, it is determined the relative drought resistance of 12 species of the genus Vitis L., 15 cultivars of the species Vitis viniera L., 3 cultivars - direct producer hybrids, 2 rootstock cultivars, and 7 distant hybrids V.vinifera L. x Muscadinia rotundifolia Michx. The higher total percentage of these 5 morphobiological characters of the leaf blade reveals the species, cultivar, hybrid of grapevine with a higher relative drought resistance. In 2011, the most drought-resistant were the grapevine species Vitis vulpina (38.79%), V. romaneti (37.86%), V. silvestris (37.40%); the cultivars “Copciac” (40.87%), “Plavae” (40.35%), “Feteasca neagră” (39,09%) and the distant hybrid DRX-M4-660 (40.18%). In 2012, more resistant to drought are the species: V. californica (43.88%), V. rupestris (39.91%), V. silvestris (39.88%), the cultivars: “Coarna albă” (44.07%), “Coarna neagră” (39.28%), “Feteasca neagră” (39.04%) and the hybrid DRX-M5-17 (39.17%).