Variety traits

Vigor — Squash (Interspecific Hybrids)

Cucurbita maxima Duchesne x Cucurbita moschata Duchesne

The ability of interspecific squash hybrids to develop robust vegetative mass and an advanced root system, ensuring scion viability, stress tolerance, and increased yields.

In the reference 11 varieties crop Cucurbita maxima Duchesne x Cucurbita moschata Duchesne, where this is mentioned in the description.

For interspecific hybrids of Cucurbita maxima x Cucurbita moschata, vigor is a key trait when used as rootstocks. High levels of vigor provide grafted crops with increased resistance to abiotic stresses and soil-borne pathogens, and allow for a significant increase in fruit weight and total yield. Choosing between hybrids with high or medium vigor allows for balancing vegetative and generative development depending on cultivation conditions.

At the seedling stage, vigor correlates with stem diameter and the rate of graft union formation, which determines the grafting success rate. The trait is evaluated through expert assessment: at the sprout stage, emergence speed and uniformity are considered, while in adult plants, the volume of vegetative mass, root development intensity, and the rate of vine growth are measured. In UPOV documentation, vigor is included in test protocols as an important phenotypic characteristic of the variety.

General information about the subject — on the page Vigor.

Sources8

Varieties of Cucurbita maxima Duchesne x Cucurbita moschata Duchesne mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.