Influence of Harvest Periods on Cassava (Manihot esculenta Crantz) Agronomic Traits and Physiological Response to Post-Harvest Physiological Deterioration
Influence of Harvest Periods on Cassava (Manihot esculenta Crantz) Agronomic Traits and Physiological Response to Post-Harvest Physiological Deterioration作者机构：Faculty of Agronomy and Agricultural Science University of Dschang Dschang Cameroon Laboratory of Plant Physiology and Biochemistry Department of Biological Sciences Higher Teacher’s Training College University of Yaoundé I Yaoundé Cameroon Department of Plant Biology Faculty of Science University of Yaoundé I Yaoundé Cameroon Plant Physiology and Improvement Unit Laboratory of Biotechnology and Environment Department of Plant Biology Faculty of Science University of Yaoundé I Yaoundé Cameroon Applied Biotechnology Engineering Laboratory Department of Agriculture and Agropastoral Higher Technical Teacher Training College University of Ebolowa Ebolowa Cameroon Federal Institute of Education Science and Technology of Mato Grosso do Sul-Naviraí Mato Grosso do Sul Mato Grosso do Sul Brazil
出 版 物：《American Journal of Plant Sciences》 (美国植物学期刊（英文）)
年 卷 期：2023年第14卷第1期
页 面：89-103页
主 题：Manihot esculenta Harvest Period Post-Harvest Deterioration Agronomic and Biochemical Parameters
摘 要：Cassava (Manihot esculenta Crantz) is the third largest source of calories in tropical countries and the sixth most important food crop in the World. However, the short shelf life of its storage roots after harvest due to a rapid post-harvest physiological deterioration (PPD) makes the roots to be considered as a risky product to market. The objectives of this work were to investigate the influence of two harvest periods on cassava agronomic parameters and their physiological response to PPD. Three cassava cultivars 96/1414, I070593 and LMR were selected for the experiment and harvested at 10 and 12 months after planting (MAP). The response to PPD was assessed during storage at 0, 3, 8 and 15 days after harvest (DAH). Total proteins content, soluble sugars and starch, total polyphenols compounds, polyphenoloxidase and peroxidase activities were recorded during storage. Results showed large variation among the parameters at the two harvest periods across the cultivars. High number of tubers was recorded in all the cultivars at 12 MAP and a significant increase in storage roots length was observed in 96/1414 and LMR from 10 MAP to 12 MAP (25 ± 5.1 to 41.3 ± 5.9 and 22.6 ± 3.3 to 27.9 ± 4.8) respectively. A reduction of about 49% of tubers weight was observed in I070593 from 10 to 12 MAP while an increase of about 36% and 11% were recorded in LMR and 96/1414 respectively. Tubers from I070593 showed less susceptibility to PPD when harvested at 10 MAP compared to those from LMR and 96/1414 where less susceptibility to PPD were recorded at 12 MAP. An increase in soluble sugars content, total proteins content and peroxidase activity subsequently to a decrease in starch content were recorded during storage from 8 to 15 days after harvest especially at 10 MAP in I070593 and at 12 MAP in LMR and 96/1414. High content of total phenolic compounds and less activity of polyphenol oxidase were correlated to PPD susceptibility. This work opens a new insight issue of the considerati
维普期刊数据库