Chayote

Crop Overview

Chayote is a perennial plant in the cucurbit family, classified as Sechium edule (Jacq.) Sw. The genus Sechium is often considered monospecific in many taxonomic classifications, with S. edule being the cultivated taxon and a few closely related wild forms described by some researchers. Archaeobotanical, linguistic, and genetic evidence suggest a Mesoamerican origin, with Mexico and nearby parts of Central America—particularly Guatemala and southern Mexico—being the main centers for domestication and diversification. From this region, cultivation spread throughout the Caribbean, South America, and eventually into subtropical and warm temperate areas of the Old World. 

Chayote is known by many common names that reflect its wide distribution: “chayote” (Spanish), “mirliton” (Louisiana, USA), “choko” (Australia, New Zealand), “christophene” (French Caribbean and parts of France), “sayote” (Philippines), “chow-chow” (India) and “chuchu” (Brazil). Other local names — for example, “vegetable pear” or “sevillano” in some markets — highlight its cultural integration across different regions.

Characteristics, Cultivation and Agricultural practices

Chayote is a vigorous, perennial vine with a shallow root system, three-lobed leaves, tendrils, and inconspicuous monoecious flowers. The edible part is a fleshy fruit that is usually flattened or pear-shaped, pale green in commercial varieties, and varies in size and surface texture among different landraces. Each fruit contains one large seed; the plant easily regenerates from buds on harvested fruits or from sprouted whole fruits, leading to common vegetative propagation practices in traditional systems.

Agronomically, chayote grows best in warm, frost-free environments with well-drained soils and plenty of water. It is often supported on trellises to improve air flow and make harvesting easier; in smallholder farms, it is frequently interplanted with other crops or grown within agroforestry systems where vertical growth saves space. Planting material can be whole fruits that will sprout, vine cuttings, or, less commonly, seedlings grown from the single internal seed. 

Recommended practices include adding organic matter, applying moderate nitrogen fertilizer, and regularly irrigating during fruit set. Economically significant pests and diseases include various cucurbit borers and beetles, aphids, whiteflies (which spread viral diseases), and fungal pathogens that cause fruit rot. Management depends on cultural practices, sanitation, and targeted chemical or biological treatments when needed. Chayote fruits mature relatively quickly, often within three to six months depending on environment and management, and can be harvested multiple times over a long bearing period when plants are well established. Post-harvest, sensitivity to chilling and mechanical damage requires careful handling and prompt marketing or processing to minimize losses.

Nutritional, Economic and Medicinal Value

Nutritionally, chayote is a low-calorie, high-water vegetable that provides small amounts of dietary fiber, vitamin C, folate, and potassium — nutrients especially important in low-income and subsistence systems where dietary variety is limited. The young shoots, leaves, and tubers produced by some varieties are also eaten and add micronutrients and plant protein to local diets. Economically, chayote fills a unique role: it is often grown by small farmers for household use and nearby markets, supplying fresh produce to city markets, roadside stalls, and informal trade networks. Value-added products (pickling, canning, freezing, and processing into chips or prepared foods) exist but are limited compared to other cucurbits, restricting broader commercial growth.

Traditional medicinal uses are documented in many cultures: chayote preparations have been used as diuretics, depuratives, and topical remedies in ethnobotanical records. 

Cultural Importance

Chayote’s integration into culinary and cultural practices is widespread throughout its range. In Mexico and Central America, it is a key part of regional cuisines and seasonal food traditions; in the Caribbean and parts of South America, it appears in festive dishes and everyday meals. The plant’s adaptability to home gardens and peri-urban farming has made it an important vegetable in areas where land and labor are limited: its ease of propagation and year-round harvest support household food security. Folklore, culinary terminology, and recipes associated with chayote differ by region, highlighting both its usefulness and its role in shaping cultural identity through food.

Gender Perspectives

Gender dynamics influence chayote production, processing, and marketing. In many small-scale farming systems, women mainly handle home gardens, seed and planting material choices, and local vegetable marketing; chayote—because of its low capital needs and suitability for home growing—often falls under this area. These gendered roles create chances for women to earn income and make nutritional choices, but they also face limitations such as restricted access to land, inputs, technical extension services, and formal markets, which can prevent women from expanding production or gaining more value from chayote.

Why is the crop underutilized?

Despite its advantages, chayote remains underused globally for several interconnected reasons. First, limited research funding has restricted efforts to improve varieties, develop post-harvest technologies, and establish mechanized production systems that could enhance commercial viability. Second, its perishability, handling needs, and market preferences for more familiar vegetables limit demand in some areas. Third, social and institutional biases in agricultural research and extension have traditionally favored staple cereals and high-value export crops over minor vegetables, resulting in a weak value chain. Finally, lack of consumer awareness and inconsistent supply diminish incentives for processors and retailers to expand markets. These factors together sustain a cycle of marginalization despite the crop’s agronomic and nutritional benefits.

Diversity Available in Genesys

As of December 2025, Genesys, the online platform that provides information on plant genetic resources conserved in genebanks, lists 12 S. edule samples. The holdings are at:

• Plant Genetic Resources Research Institute in Ghana – 5 samples.
• Genebank, Leibniz Institute of Plant Genetics and Crop Plant Research in Germany, 3 samples.
• Centro de Conservación de la Biodiversidad Agrícola de Tenerife in Spain – 3 samples.
• Uganda National Genebank – 1 sample.

Current Breeding Efforts

Breeding and formal improvement of chayote have been modest compared to major cucurbit crops. Traditional improvement mainly depends on farmers selecting landraces with desirable traits, such as fruit size, taste, and ease of propagation. When institutional research programs are in place, their priorities usually include increasing yield and uniformity, boosting resistance to pests and viral diseases, extending shelf life and storage tolerance, and selecting types suited to various agroecological zones. 

Conservation of genetic resources in national and regional germplasm collections supports these efforts and promotes participatory breeding approaches that involve farmers, especially women, in choosing and selecting traits. Research efforts increasingly focus on value-chain development, including post-harvest handling, minor processing technologies, and market linkages, as well as integrating chayote into diversified farming systems to enhance resilience and nutrition security.