NDLI: Postharvest cold tolerance in summer squash and its association with reduced cold-induced ethylene production

Content Provider	Springer Nature Link
Author	Megías, Zoraida Manza, Susana Martínez, Cecilia García, Alicia Aguado, Encarnación Garrido, Dolores Mar Rebolloso, María Valenzuela, Juan Luis Jamilena, Manuel
Copyright Year	2016
Abstract	Tolerance to postharvest chilling injury (PCI) is becoming an ever more essential trait for export-oriented vegetables requiring refrigerated transport and/or storage. Summer squash, Cucurbita pepo, is highly subject to PCI. We screened a collection consisting of 80 long-fruited accessions of morphotypes zucchini, cocozelle, and vegetable marrow for cold tolerance. Of these, we selected the most cold tolerant and some of the least cold tolerant for further scrutiny. Fruits from each accession were stored for 7 and 14 days at 4 °C before evaluating PCI, weight loss (WL) and ethylene production. Several accessions, including CpCAL003, CpCAL053 and CpCAL051, showed tolerance to PCI, with a lower percentage of the fruit surface suffering injury and WL at 4 °C. The mode of inheritance of tolerance to PCI index and WL was investigated by crossing the tolerant accession designated CpCAL003 with the susceptible CpCAL112, and observing their filial- and backcross-generation progenies. The results indicate that cold tolerance is not conferred by a single gene, but rather is quantitatively inherited trait. Cold-induced ethylene production co-segregated with PCI susceptibility. Thus, ethylene production under cold storage can be used as physiological indicator in selecting for PCI tolerance in summer squash.
Starting Page	1
Ending Page	12
Page Count	12
File Format	PDF
ISSN	00142336
Journal	Euphytica
Volume Number	213
Issue Number	1
e-ISSN	15735060
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-12-09
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cucurbita pepo Postharvest chilling injury Fruit quality Ethylene Plant Sciences Plant Genetics & Genomics Plant Pathology Plant Physiology Biotechnology
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Horticulture Agronomy and Crop Science

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