A field trial to evaluate the growth and nutrient uptake of cocoa intercropped with coconut was conducted in Cocoa Research Institute of Nigeria(CRIN)Headquarters,Idi-Ayunre,Ibadan,Oyo State between 2019 and 2022.Ther...A field trial to evaluate the growth and nutrient uptake of cocoa intercropped with coconut was conducted in Cocoa Research Institute of Nigeria(CRIN)Headquarters,Idi-Ayunre,Ibadan,Oyo State between 2019 and 2022.There were four treatments comprising of cocoa sole,cocoa/plantain,cocoa/coconut and cocoa/coconut/plantain intercrop.The experimental design was Randomized Complete Block(RCB)replicated three times.Result obtained showed that cocoa/plantain was significantly higher(p<0.05)than all other treatments in all parameters considered and closely followed by cocoa/coconut,then cocoa sole with cocoa/plantain/coconut giving the least performance.The same trend was observed in the nutrient uptake.It was also observed in the trial that the two crops:cocoa and coconut did not show any deleterious effect on their growth when intercropped together.This showed that the two crops are compatible when grown on the same piece of land.Therefore,cocoa/coconut intercrop could be recommended to cocoa farmers in south west Nigeria to increase their revenue generation when coconut starts bearing fruit instead of sole planting of cocoa.展开更多
根据野外采样和文献查阅,系统整理了可可的地理分布记录,并利用MaxEnt生态位模型和ArcGIS软件对可可的潜在适宜分布范围进行预测。结果表明:北美洲南部、中南美洲北部、非洲西部、亚洲东南部以及太平洋美拉尼西亚群岛地区均是可可的潜...根据野外采样和文献查阅,系统整理了可可的地理分布记录,并利用MaxEnt生态位模型和ArcGIS软件对可可的潜在适宜分布范围进行预测。结果表明:北美洲南部、中南美洲北部、非洲西部、亚洲东南部以及太平洋美拉尼西亚群岛地区均是可可的潜在适宜分布区域。其中,中国海南、台湾南部、云南西双版纳、广东雷州半岛也属于可可的适生范围。经ROC(Receiver operating characteristic)曲线分析法验证,MaxEnt模型的AUC(Area under curve)值为0.977,表明预测结果具有较高的可信度。各环境变量重要性的Jacknife检验表明,极端最低温度、年降雨量、年温度变化范围、最暖季降雨量对可可的潜在分布影响最大。展开更多
利用15对SSR引物,分析具有广泛来源的70份可可资源的遗传多样性。结果表明,15对引物共扩增出76个条带,其中50个多态性条带,占总带数的65.8%。70份可可资源间遗传相似系数（SM）在0.341~0.943之间,平均值为0.625,说明可可资源具有丰富的...利用15对SSR引物,分析具有广泛来源的70份可可资源的遗传多样性。结果表明,15对引物共扩增出76个条带,其中50个多态性条带,占总带数的65.8%。70份可可资源间遗传相似系数（SM）在0.341~0.943之间,平均值为0.625,说明可可资源具有丰富的遗传多样性。在相似系数为0.65水平上,可将70份可可资源分成10类。利用Structure 2.3.2软件分析群体结构,结合可可果实相关性状的表型数据,采用Tassel 2.1的一般线性模型（General linear model,GLM）进行关联分析;结果表明18个位点与果重、果壳重、果长、果径围、果壳厚显著相关（p〈0.05）,各位点对表型变异贡献率为5.5%~13.1%。展开更多
文摘A field trial to evaluate the growth and nutrient uptake of cocoa intercropped with coconut was conducted in Cocoa Research Institute of Nigeria(CRIN)Headquarters,Idi-Ayunre,Ibadan,Oyo State between 2019 and 2022.There were four treatments comprising of cocoa sole,cocoa/plantain,cocoa/coconut and cocoa/coconut/plantain intercrop.The experimental design was Randomized Complete Block(RCB)replicated three times.Result obtained showed that cocoa/plantain was significantly higher(p<0.05)than all other treatments in all parameters considered and closely followed by cocoa/coconut,then cocoa sole with cocoa/plantain/coconut giving the least performance.The same trend was observed in the nutrient uptake.It was also observed in the trial that the two crops:cocoa and coconut did not show any deleterious effect on their growth when intercropped together.This showed that the two crops are compatible when grown on the same piece of land.Therefore,cocoa/coconut intercrop could be recommended to cocoa farmers in south west Nigeria to increase their revenue generation when coconut starts bearing fruit instead of sole planting of cocoa.
文摘根据野外采样和文献查阅,系统整理了可可的地理分布记录,并利用MaxEnt生态位模型和ArcGIS软件对可可的潜在适宜分布范围进行预测。结果表明:北美洲南部、中南美洲北部、非洲西部、亚洲东南部以及太平洋美拉尼西亚群岛地区均是可可的潜在适宜分布区域。其中,中国海南、台湾南部、云南西双版纳、广东雷州半岛也属于可可的适生范围。经ROC(Receiver operating characteristic)曲线分析法验证,MaxEnt模型的AUC(Area under curve)值为0.977,表明预测结果具有较高的可信度。各环境变量重要性的Jacknife检验表明,极端最低温度、年降雨量、年温度变化范围、最暖季降雨量对可可的潜在分布影响最大。
文摘利用15对SSR引物,分析具有广泛来源的70份可可资源的遗传多样性。结果表明,15对引物共扩增出76个条带,其中50个多态性条带,占总带数的65.8%。70份可可资源间遗传相似系数（SM）在0.341~0.943之间,平均值为0.625,说明可可资源具有丰富的遗传多样性。在相似系数为0.65水平上,可将70份可可资源分成10类。利用Structure 2.3.2软件分析群体结构,结合可可果实相关性状的表型数据,采用Tassel 2.1的一般线性模型（General linear model,GLM）进行关联分析;结果表明18个位点与果重、果壳重、果长、果径围、果壳厚显著相关（p〈0.05）,各位点对表型变异贡献率为5.5%~13.1%。
