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Growth Dynamics and Water Potential Components of Three Summer Squash ( Cucurbita pepo  L.) Cultivars | Notulae Botanicae Horti Agrobotanici Cluj-Napoca
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Alejo RODRÍGUEZ-BURGOS Universidad Autónoma de Sinaloa. Facultad de Ciencias Químico-Biológicas, Programa Regional de Posgrado en Biotecnología, 80013 Culiacán (MX)
Tomás OSUNA-ENCISO Centro de Investigación en Alimentación y Desarrollo, AC Unidad Culiacán, Carretera a Eldorado Km 5.5 Campo el Diez, 80110 Culiacán, Sinaloa (MX)
Manuel BÁEZ-SAÑUDO Centro de Investigación en Alimentación y Desarrollo, AC Unidad Culiacán, Carretera a Eldorado Km 5.5 Campo el Diez, 80110 Culiacán, Sinaloa
Adriana SAÑUDO-BARAJAS Centro de Investigación en Alimentación y Desarrollo, AC Unidad Culiacán, Carretera a Eldorado Km 5.5 Campo el Diez, 80110 Culiacán, Sinaloa (MX)
Rosalba CONTRERAS-MARTÍNEZ Centro de Investigación en Alimentación y Desarrollo, AC Unidad Culiacán, Carretera a Eldorado Km 5.5 Campo el Diez, 80110 Culiacán, Sinaloa (MX)
José de Jesús ZAZUETA-MORALES Universidad Autónoma de Sinaloa. Facultad de Ciencias Químico-Biológicas, Programa Regional de Posgrado en Biotecnología, 80013 Culiacán (MX)
Misael Odín VEGA-GARCÍA Universidad Autónoma de Sinaloa. Facultad de Ciencias Químico-Biológicas, Programa Regional de Posgrado en Biotecnología, 80013 Culiacán (MX)
Dolores MUY-RANGEL Centro de Investigación en Alimentación y Desarrollo, AC Unidad Culiacán, Carretera a Eldorado Km 5.5 Campo el Diez, 80110 Culiacán, Sinaloa (MX)
Summer squash fruit is a horticultural crop that possesses a very short postharvest life due to its high rates of metabolism and transpiration
along with a low cuticle resistance exhibited mainly when the fruit is harvested at horticultural maturity. This research was realized following the
fruit growth of the summer squash cultivars: ‘Enterprise’, ‘Pascola’ and ‘Hurakan F1’, whose seeds were germinated in polystyrene trays and their
seedlings were subsequently transferred to pots for optimum growth under greenhouse conditions. Fruits were sampled at 3, 5, 7 and 9 days after
anthesis (DAA). Physical (weight, diameter, and length of fruit), chemical (pH, titratable acidity and total soluble solids), hydric status (water,
osmotic and pressure potentials), and histological analysis were done. The highest number of fruits having marketing quality were shown in both
‘Pascola’ and ‘Hurakan F1’ cultivars at 7 DAA, whereas, in ‘Enterprise’ was shown at 9 DAA. Marketing quality fruits from the three cultivars
showed similarities on pH (about 6.6), titratable acidity (TA) decreases in ‘Enterprise’ and ‘Hurakan F1’, whereas total soluble solids (TSS)
decreases in ‘Pascola’ and ‘Hurakan F1’ (pJ 0.5). From 3 to 9 DAA, in all cultivars, the water potential was close to -1.0 MPa, the osmotic
potential showed an increasing pattern ranging between -1.59 and -1.15 MPa, and the pressure potential remained in the positive range. Tissue
water stability was histologically related to a well-defined parenchyma tissue showing thin-walled, polygonal, intact and turgid cells during fruit
RODRÍGUEZ-BURGOS, A., CARRILLO-LÓPEZ, A., OSUNA-ENCISO, T., BÁEZ-SAÑUDO, M., SAÑUDO-BARAJAS, A., CONTRERAS-MARTÍNEZ, R., ZAZUETA-MORALES, J. de J., VEGA-GARCÍA, M. O., & MUY-RANGEL, D. (2015). Growth Dynamics and Water Potential Components of Three Summer Squash ( Cucurbita pepo  L.) Cultivars. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 43(2), 420–425. https://doi.org/10.15835/nbha4329827
Vol. 43 No. 2 (2015)
© Articles by the authors; licensee UASVM and SHST, Cluj-Napoca, Romania. Papers published in the journal Notulae Botanicae Horti Agrobotanici Cluj-Napoca are open access distributed under the terms and conditions of the Creative Commons Attribution License (http://creativecommons.org/licenses).
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