Genetic diversity of common guava in Kenya: an underutilized naturalized fruit species

Chiveu, Josiah Chemulanga; Mueller, Markus M.; Krutovsky, Konstantin V.; Kehlenbeck, Katja; Pawelzik, Elke; Naumann, Marcel

doi:10.17660/th2019/74.5.4

Cited by 8 publications

(5 citation statements)

References 30 publications

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“…Postharvest guava storage was not a major practice in both Kitui and Taita Taveta as farmers harvested enough for their consumption. This is explained by the low marketability and consumption of the fruit in Kenya (Chiveu, 2019). After harvesting, the guavas were manually transported to the homestead and market using buckets, sacks, crates or cartons.…”

Section: Guava Postharvest Handling Practicesmentioning

confidence: 99%

“…Guava trees survive in most agro ecological zones in Kenya except the arid areas (Omayio et al, 2019). The trees grow naturally unattended and grow from seeds dispersed by animals, birds and other agents (Chiveu, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Poor postharvest handling has contributed to huge guava postharvest losses in Kenya as the fruit is neglected and farmers mostly depend on natural production (Omayio et al, 2019). There is high production of the fruit in Kenya with minimal utilization due to short shelf life and low marketability (Chiveu, 2019). The study aimed at documenting harvesting and postharvest handling practices and marketing of the guava fruit.…”

Section: Introductionmentioning

confidence: 99%

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Harvesting, postharvest handling, hygiene knowledge and practices of guava fruit farmers: A comparative study of two counties of Kenya

Katumbi¹,

Imungi²,

Abong³

et al. 2021

Afr. J. Food Sci.

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The guava (Psidium guajava) grows on farms or in the bush in many parts of Kenya, including Kitui and Taita Taveta, and remains virtually unattended. Guava fruit value chain is commercially disorganized and standard postharvest handling and storage procedures are not practiced as there is no bulk handling. This study evaluated the harvesting and postharvest handling practices of the guava fruit in two counties of Kenya. A total of 417 farmers were selected from the two counties (Kitui, n=214 and Taita Taveta, n=203). Using a structured questionnaire, data was collected utilizing Open Data Kit (ODK). Results showed that the main indicative maturity indices in Kitui and Taita Taveta were skin color (98.59 and 92.12%) and full ripe (38.79 and 18.72%) respectively. Results indicated that no packaging was done at farm level as only small quantities were harvested. Storage period was short (< 4 days) mainly to await consumption as reported by 41.6 and 55.2% handlers in Kitui and Taita Taveta, respectively. A cluster analysis of hygiene and postharvest handling practices indicated that Kitui farmers were more knowledgeable (71.9%) as compared to Taita Taveta (49.8%). Additionally, female farmers were more knowledgeable (65.4%) on postharvest handling than males (55.4%). Postharvest handling practices were informal with little packaging, poor hygiene practices, short term storage and informal marketing of small quantities in both Counties.

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Section: Guava Postharvest Handling Practicesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Harvesting, postharvest handling, hygiene knowledge and practices of guava fruit farmers: A comparative study of two counties of Kenya

Katumbi¹,

Imungi²,

Abong³

et al. 2021

Afr. J. Food Sci.

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“…Its high nutritional value, ability to grow in a wide range of eco-climatic zones and ease of cultivation have made it an important commercial crop in North America, Asia, Africa, Oceania and parts of Europe [Sakai et al, 2001;Pereira et al, 2016; Global Invasive Species Database, 2015]. The species, which belongs to the Myrtaceae family, thrives in tropical humid and sub-humid zones at an elevation range of 0 to 2740 m above sea level and an annual rainfall of 1,000 to 2,000 mm [Global Invasive Species Database, 2015; Pereira et al, 2016;Chiveu et al, 2019]. It prefers full sunlight, but also grows under partial shading [Pereira et al, 2016].…”

Section: Introductionmentioning

confidence: 99%

“…Its fruit is highly nutritious with a very high content of vitamin C, vitamin A and zinc [Kidaha et al, 2015;Omayio et al, 2019]. It is mostly eaten raw, but can also be processed industrially to produce packed juice and jam or sliced and used in salads and desserts [Global Invasive Species Database, 2015; Omayio et al, 2019;Chiveu et al, 2019]. Its ripe fruit is also used as a source of ascorbic acid in many foods and drinks.…”

Section: Introductionmentioning

confidence: 99%

Ecological Manipulation of Psidium guajava to Facilitate Secondary Forest Succession in Tropical Forests

Otuoma¹,

Nyongesah²,

Owino³

et al. 2020

J. Ecol. Eng.

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Psidium guajava L. has been documented as an exotic invasive species in many parts of the world, but little is known about its interactions with native woody species during secondary forest succession in tropical forests. Its invasion and interactions with native species in different stages of secondary forest succession were assessed in Kakamega Rainforest in western Kenya. The study covered three forest blocks each with five different forest types, namely: open fields, young secondary forest, middle-aged secondary forest, old-growth secondary forest and disturbed primary forest, which served as the control. Open fields that were subjected to frequent clearing to control the spread of Psidium guajava remained under a thicket of the species two decades later. On the other hand, open fields where Psidium guajava was ignored, either due to lack of resources or sheer neglect, transformed into young secondary forest stands within a decade. The transformation increased woody species richness from 2.0±0.0 to 5.0±0.0 ha-1 , and the Shannon diversity index from 0.30±0.33 to 1.10±0.01. It reduced the dominance of Psidium guajava from 80.5±22.7 to 62.26±0.84% and changed the canopy structure. The change in canopy structure led to the mortality of Psidium guajava stems in the sub-canopy and understory layer, which significantly reduced its stem density from 1,111±313 to 639.4±45 stems ha-1. The pattern was repeated in middle-aged secondary forest stands with woody species richness increasing to 26.0±8.2 ha-1 , and Shannon index to 2.72±0.32. Psidium guajava's dominance and stem density decreased further to 30.44% and 400.57 stems ha-1 , respectively, due to mortality attributed to shading by native tree species. In the old-growth secondary forest, only snags of Psidium guajava were recorded. The species was not represented in the disturbed primary forest. The results indicate that Psidium guajava facilitates secondary forest succession by allowing shade-tolerant native tree species to recruit and grow in its shade. It is thereafter eliminated when the native species close the forest canopy. The species can be ecologically manipulated to facilitate post-disturbance forest regrowth and thereafter removing it when the forest canopy begins to close.

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Guava: A Nutraceutical-Rich Underutilized Fruit Crop

Mathiazhagan

Vasugi

Ravishankar

2023

Compendium of Crop Genome Designing for Nutraceuticals

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Genetic diversity of common guava in Kenya: an underutilized naturalized fruit species

Cited by 8 publications

References 30 publications

Harvesting, postharvest handling, hygiene knowledge and practices of guava fruit farmers: A comparative study of two counties of Kenya

Harvesting, postharvest handling, hygiene knowledge and practices of guava fruit farmers: A comparative study of two counties of Kenya

Ecological Manipulation of Psidium guajava to Facilitate Secondary Forest Succession in Tropical Forests

Guava: A Nutraceutical-Rich Underutilized Fruit Crop

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