[Objectives]The paper was to identify the pathogenic species of postharvest diseases of kiwifruit.[Methods]The pathogenic fungi were isolated from diseased kiwifruits during the storage period,and cultured to observe ...[Objectives]The paper was to identify the pathogenic species of postharvest diseases of kiwifruit.[Methods]The pathogenic fungi were isolated from diseased kiwifruits during the storage period,and cultured to observe their culture traits and morphological characteristics.Molecular biological identification and pathogenicity test were carried out to confirm the main pathogens.[Results]There were 7 species of pathogenic fungi causing kiwifruit diseases during the storage period,including Alternaria spp.,Botryosphaeria dothidea,Phomopsis/Diaporthe spp.,Pestalotiopsis sp.,Pseudocercospora sp.,Colletotrichum sp.,and Botrytis cinerea.[Conclusions]The research will provide a scientific basis for the prevention and control of postharvest diseases of kiwifruit.展开更多
A field trial was set in 2018/2019 season to investigate </span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">capacity of cashew seeds to ...A field trial was set in 2018/2019 season to investigate </span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">capacity of cashew seeds to germinate and its vegetative performance with respect to </span><span style="font-family:Verdana;">the </span><span style="font-family:""><span style="font-family:Verdana;">storage </span><span style="font-family:Verdana;">period at Agricultural Research Institute-(TARI-Naliendele), Mtwara-Tanzania.</span><span style="font-family:Verdana;"> The variable investigated was </span></span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">duration of </span><span style="font-family:Verdana;">the </span><span style="font-family:""><span style="font-family:Verdana;">cashew seeds storage period. Cashew seeds were harvested at polyclonal seed gardens (PSG) for three har</span><span style="font-family:Verdana;">vesting seasons 2016, 2017 and 2018 consecutively;seeds were sorted, weighe</span><span style="font-family:Verdana;">d and soaked before sowing to test viability in respective to storage time. Using </span></span><span style="font-family:Verdana;">a </span><span style="font-family:Verdana;">randomized complete block design obeying factorial approach the experiment was laid with three replications. The observed growth parameters were height (cm), number of leaves, leaf length (cm), leaf width (cm), leaf area (sq cm), leaf area index (LAI), canopy diameter (cm) and seedlings canopy ground area (sq cm). </span><span style="font-family:Verdana;">The a</span><span style="font-family:""><span style="font-family:Verdana;">nalysis was done by using GenStat under Duncan Multiple Range Test (DMRT) on seed germination. </span><span style="font-family:Verdana;">The findings indicated that cashew seeds harvested in 2018 were the superior in both germination and growth vigor differing significantly (p</span></span><span style="font-family:""> </span><span style="font-family:Verdana;"><</span><span style="font-family:""> </span><span style="font-family:Verdana;">0.05) from other seeds harvested in the previous years. Cashew seeds harvested in 2017 were weak and those harvested in 2016 were the worse such that no seeds were able even to germinate. Thus, it is recommendable to sow cashew seeds harvested at</span><span style="font-family:Verdana;"> the</span><span style="font-family:Verdana;"> current season for sowing than those stored for more than a year.展开更多
The influence of the short storage periods at different temperatures on the concentrations of extractable soil cations (Ca<sup>2+</sup>, Mg<sup>2+</sup>, Na<sup>+</sup> and K<sup...The influence of the short storage periods at different temperatures on the concentrations of extractable soil cations (Ca<sup>2+</sup>, Mg<sup>2+</sup>, Na<sup>+</sup> and K<sup>+</sup>) and anions (Cl<sup>-</sup>, SO<sub>4</sub>-</sup> and PO<sub>4</sub>-</sup> ) has been investigated in nine soil samples from Nile river terraces at River Nile State, North of Sudan (17.82289 to 17.82389N and 33.99974 to 34.02127E). Each soil extract is divided into three treatments: i) control (immediately analyzed);ii) storage for 10 days and;iii) storage for 30 days. Each treatment is replicated three times: i) storage at 10°C;ii) storage at ambient laboratory temperature (25°C) and;iii) storage at 45°C in incubator. Statistical analysis of results reveals that significant difference are found at level (P -</sup> and PO<sub>4</sub>-</sup> (0.043, 0.002, 0.001, 0.021, 0.004 and 0.001) respectively at 25°C and 45°C and storage periods of 10 and 30 days. In contrast, significant difference is also found at level (P -</sup> concentrations are significantly decreased when the storage period exceeds 10 days and temperature more than 25°C. Depending upon our study results;we conclude that, all extractable inorganic nutrients are clearly affected by storage periods at various temperatures, exception of Na<sup>+</sup>. Most cations and anions are increased significantly with increased of storage period and temperatures. We therefore highly recommend that the extractable inorganic soil nutrients should be rapidly analyzed in order to obtain accurate results;otherwise, the time between extraction and analysis should be carefully recorded which may help considerably interpreting data from various studies.展开更多
基金Supported by Sichuan Science and Technology Program(2022YFN0046,2018JY0288)Chengdu Science and Technology Program(2021-YF05-02309-SN)。
文摘[Objectives]The paper was to identify the pathogenic species of postharvest diseases of kiwifruit.[Methods]The pathogenic fungi were isolated from diseased kiwifruits during the storage period,and cultured to observe their culture traits and morphological characteristics.Molecular biological identification and pathogenicity test were carried out to confirm the main pathogens.[Results]There were 7 species of pathogenic fungi causing kiwifruit diseases during the storage period,including Alternaria spp.,Botryosphaeria dothidea,Phomopsis/Diaporthe spp.,Pestalotiopsis sp.,Pseudocercospora sp.,Colletotrichum sp.,and Botrytis cinerea.[Conclusions]The research will provide a scientific basis for the prevention and control of postharvest diseases of kiwifruit.
文摘A field trial was set in 2018/2019 season to investigate </span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">capacity of cashew seeds to germinate and its vegetative performance with respect to </span><span style="font-family:Verdana;">the </span><span style="font-family:""><span style="font-family:Verdana;">storage </span><span style="font-family:Verdana;">period at Agricultural Research Institute-(TARI-Naliendele), Mtwara-Tanzania.</span><span style="font-family:Verdana;"> The variable investigated was </span></span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">duration of </span><span style="font-family:Verdana;">the </span><span style="font-family:""><span style="font-family:Verdana;">cashew seeds storage period. Cashew seeds were harvested at polyclonal seed gardens (PSG) for three har</span><span style="font-family:Verdana;">vesting seasons 2016, 2017 and 2018 consecutively;seeds were sorted, weighe</span><span style="font-family:Verdana;">d and soaked before sowing to test viability in respective to storage time. Using </span></span><span style="font-family:Verdana;">a </span><span style="font-family:Verdana;">randomized complete block design obeying factorial approach the experiment was laid with three replications. The observed growth parameters were height (cm), number of leaves, leaf length (cm), leaf width (cm), leaf area (sq cm), leaf area index (LAI), canopy diameter (cm) and seedlings canopy ground area (sq cm). </span><span style="font-family:Verdana;">The a</span><span style="font-family:""><span style="font-family:Verdana;">nalysis was done by using GenStat under Duncan Multiple Range Test (DMRT) on seed germination. </span><span style="font-family:Verdana;">The findings indicated that cashew seeds harvested in 2018 were the superior in both germination and growth vigor differing significantly (p</span></span><span style="font-family:""> </span><span style="font-family:Verdana;"><</span><span style="font-family:""> </span><span style="font-family:Verdana;">0.05) from other seeds harvested in the previous years. Cashew seeds harvested in 2017 were weak and those harvested in 2016 were the worse such that no seeds were able even to germinate. Thus, it is recommendable to sow cashew seeds harvested at</span><span style="font-family:Verdana;"> the</span><span style="font-family:Verdana;"> current season for sowing than those stored for more than a year.
文摘The influence of the short storage periods at different temperatures on the concentrations of extractable soil cations (Ca<sup>2+</sup>, Mg<sup>2+</sup>, Na<sup>+</sup> and K<sup>+</sup>) and anions (Cl<sup>-</sup>, SO<sub>4</sub>-</sup> and PO<sub>4</sub>-</sup> ) has been investigated in nine soil samples from Nile river terraces at River Nile State, North of Sudan (17.82289 to 17.82389N and 33.99974 to 34.02127E). Each soil extract is divided into three treatments: i) control (immediately analyzed);ii) storage for 10 days and;iii) storage for 30 days. Each treatment is replicated three times: i) storage at 10°C;ii) storage at ambient laboratory temperature (25°C) and;iii) storage at 45°C in incubator. Statistical analysis of results reveals that significant difference are found at level (P -</sup> and PO<sub>4</sub>-</sup> (0.043, 0.002, 0.001, 0.021, 0.004 and 0.001) respectively at 25°C and 45°C and storage periods of 10 and 30 days. In contrast, significant difference is also found at level (P -</sup> concentrations are significantly decreased when the storage period exceeds 10 days and temperature more than 25°C. Depending upon our study results;we conclude that, all extractable inorganic nutrients are clearly affected by storage periods at various temperatures, exception of Na<sup>+</sup>. Most cations and anions are increased significantly with increased of storage period and temperatures. We therefore highly recommend that the extractable inorganic soil nutrients should be rapidly analyzed in order to obtain accurate results;otherwise, the time between extraction and analysis should be carefully recorded which may help considerably interpreting data from various studies.
