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FIG-LEAF GOURD CUCURBITA FICIFOLIA BOUCHE – A NEW DOMESTIC PUMPKIN SPECIES IN UKRAINE

Article language

Українська

Print date

23.12.20

Date posted online

30.04.2021

Institution

Dnipropetrovsk Experiment Station of Institute of Vegetables And Melon Growing of NAAS

Bibliography

Aim. To study morphobiological and economically valuable features of four collection fig-leaf gourd (Cucurbita ficifolia Bouche) accessions under the conditions of the Northern Steppe of Ukraine. 

Results and Discussion. We investigated 4 fig-leaf gourd accessions (Cabello de Angel (ESP), DN01000 (NLD), DN01001 (MEX) and DN01002 (unknown origin) and proved that it was possible to grow C. ficifolia as a crop in the steppe of Ukraine and to obtain physiologically mature fruits and seeds. The vegetation period of the accessions under investigation varied within 140–150 days. DN01000 (NLD) and DN01002 (unknown origin) were the most early ripening (140 days). Cabello de Angel (ESP) and DN01001 (MEX) ripened the latest (148 days and 150 days, respectively). The studied plants had a strong habitus (the main stem length was 6–7 m) and long internodes (longer than 20 cm). The fruit pattern is a green net on a white-greenish background. The flesh merges with piths like in watermelons. Seeds are black, oval, small or medium (1.3 – 1.8 cm). Five-year data show the commercial performance of the accessions was low (2.3 – 2.9 kg). Cabello de Angel (ESP) and DN01000 (NLD) had the best performance (2.8-2.9 kg / plant). The other two accessions, DN01001 (MEX) and DN01002 (unknown origin) had equally poor performance (2.3 kg / plant). In general, the potential marketable yields from these accessions grown with a density of 5,100 plants/ha are low (11.7 - 14.8 t / ha) in comparison with three other pumpkin species (C. реро, C. maxima, C. moschata). The total number of fruits amounted to 4-7 fruits/plant; the number of mature fruits - 1.5-2.0 fruits/plant. The average fruit weight ranged 1.4 to 1.8 kg. The content of soluble dry matter was low (3 – 5 %). DN01000 (NLD) turned out to be very highly resistant to powdery mildew and bacterial leaf blight (9 points). This accession was also higly resistant to melon aphids (7 points). The other accessions were highly resistant to the above-referred pathogens (7 points) and moderately damaged by melon aphids (5 points).

Conclusions. The studied fig-leaf gourd (Cucurbita ficifolia) accessions are late-ripening (140–150 days); their commercial yields are 11.7–14.8 t / ha; their fruits contain little soluble dry matter (3.0 - 5.0 %); they are very highly resistant or highly resistant to common diseases (bacterial leaf blight, powdery mildew) and pests (melon aphids). Through the lens of breeding, fig-leaf gourd requires further detailed research, since it is of great interest as a stock for other cucurbits.

Section

SOURCES AND DONORS

Abstract

Aim. To study morphobiological and economically valuable features of four collection fig-leaf gourd (Cucurbita ficifolia Bouche) accessions under the conditions of the Northern Steppe of Ukraine. 

Results and Discussion. We investigated 4 fig-leaf gourd accessions (Cabello de Angel (ESP), DN01000 (NLD), DN01001 (MEX) and DN01002 (unknown origin) and proved that it was possible to grow C. ficifolia as a crop in the steppe of Ukraine and to obtain physiologically mature fruits and seeds. The vegetation period of the accessions under investigation varied within 140–150 days. DN01000 (NLD) and DN01002 (unknown origin) were the most early ripening (140 days). Cabello de Angel (ESP) and DN01001 (MEX) ripened the latest (148 days and 150 days, respectively). The studied plants had a strong habitus (the main stem length was 6–7 m) and long internodes (longer than 20 cm). The fruit pattern is a green net on a white-greenish background. The flesh merges with piths like in watermelons. Seeds are black, oval, small or medium (1.3 – 1.8 cm). Five-year data show the commercial performance of the accessions was low (2.3 – 2.9 kg). Cabello de Angel (ESP) and DN01000 (NLD) had the best performance (2.8-2.9 kg / plant). The other two accessions, DN01001 (MEX) and DN01002 (unknown origin) had equally poor performance (2.3 kg / plant). In general, the potential marketable yields from these accessions grown with a density of 5,100 plants/ha are low (11.7 - 14.8 t / ha) in comparison with three other pumpkin species (C. реро, C. maxima, C. moschata). The total number of fruits amounted to 4-7 fruits/plant; the number of mature fruits - 1.5-2.0 fruits/plant. The average fruit weight ranged 1.4 to 1.8 kg. The content of soluble dry matter was low (3 – 5 %). DN01000 (NLD) turned out to be very highly resistant to powdery mildew and bacterial leaf blight (9 points). This accession was also higly resistant to melon aphids (7 points). The other accessions were highly resistant to the above-referred pathogens (7 points) and moderately damaged by melon aphids (5 points).

Conclusions. The studied fig-leaf gourd (Cucurbita ficifolia) accessions are late-ripening (140–150 days); their commercial yields are 11.7–14.8 t / ha; their fruits contain little soluble dry matter (3.0 - 5.0 %); they are very highly resistant or highly resistant to common diseases (bacterial leaf blight, powdery mildew) and pests (melon aphids). Through the lens of breeding, fig-leaf gourd requires further detailed research, since it is of great interest as a stock for other cucurbits.

Keywords

fig-leaf gourd, Cucurbita ficifolia, accession, fruit, yield