H. Ehara, H. Shibata, W. Prathumyot, H. Naito, T. Mishima, M. Tuiwawa, Alivereti N. Naikatini, I. Rounds
Na+, K+, Ca2+, Mg2+ and Cl- concentrations in different plant parts and some physiological characteristics under NaCl treatment in solution culture were determined to investigate the salt resistance of Metroxylon vitiense (H. Wendl.) H. Wendl. ex Benth. & Hook. f. that belongs to the same genus as sago palm (M. sagu Rottb.). Seedlings at the 11th to 13th leaf stages were used for the treatment of 342mM (2%) NaCl for 31 days in a phytotron at 30°C and 75% relative humidity under natural sunlight in mid-summer in central Japan. The Na+ and Cl- concentrations increased in the roots, petioles and leaflets with the NaCl treatment, while, the K+ concentration did not change in the top parts. The Ca2+ and Mg2+ concentrations increased in the leaflets, especially at lower and higher leaf positions, respectively. Leaf emergence and dry matter weight of the top parts were not affected by the NaCl treatment, whereas the transpiration rate decreased. It was, therefore, considered that salt avoidance to maintain the water status in the leaves by restricting the transpiration is important for the salt resistance of M. vitiense. The changes in the Ca2+ concentration can be considered to play a role in adequate absorption of K+, which would enable the plant to maintain osmotic adjustment in the leaflets.
{"title":"Absorption and Distribution of Na+ and Some Ions in Seedlings of Metroxylon vitiense H. Wendl. ex Benth. & Hook. f. under Salt Stress","authors":"H. Ehara, H. Shibata, W. Prathumyot, H. Naito, T. Mishima, M. Tuiwawa, Alivereti N. Naikatini, I. Rounds","doi":"10.11248/JSTA.52.17","DOIUrl":"https://doi.org/10.11248/JSTA.52.17","url":null,"abstract":"Na+, K+, Ca2+, Mg2+ and Cl- concentrations in different plant parts and some physiological characteristics under NaCl treatment in solution culture were determined to investigate the salt resistance of Metroxylon vitiense (H. Wendl.) H. Wendl. ex Benth. & Hook. f. that belongs to the same genus as sago palm (M. sagu Rottb.). Seedlings at the 11th to 13th leaf stages were used for the treatment of 342mM (2%) NaCl for 31 days in a phytotron at 30°C and 75% relative humidity under natural sunlight in mid-summer in central Japan. The Na+ and Cl- concentrations increased in the roots, petioles and leaflets with the NaCl treatment, while, the K+ concentration did not change in the top parts. The Ca2+ and Mg2+ concentrations increased in the leaflets, especially at lower and higher leaf positions, respectively. Leaf emergence and dry matter weight of the top parts were not affected by the NaCl treatment, whereas the transpiration rate decreased. It was, therefore, considered that salt avoidance to maintain the water status in the leaves by restricting the transpiration is important for the salt resistance of M. vitiense. The changes in the Ca2+ concentration can be considered to play a role in adequate absorption of K+, which would enable the plant to maintain osmotic adjustment in the leaflets.","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"377 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132121006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Shimizu, W. Cao, Naoyuki Abiko, N. Ishikawa, K. Hamamura
{"title":"Salt Tolerance of Suaeda japonica M. and Use in Salt- Affected Lands","authors":"K. Shimizu, W. Cao, Naoyuki Abiko, N. Ishikawa, K. Hamamura","doi":"10.11248/JSTA.52.1","DOIUrl":"https://doi.org/10.11248/JSTA.52.1","url":null,"abstract":"","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129390209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Ehara, H. Shibata, W. Prathumyot, H. Naito, H. Miyake
{"title":"Absorption and Distribution of Na+, Cl- and Some Other Ions and Physiological Characteristics of Sago Palm under Salt Stress","authors":"H. Ehara, H. Shibata, W. Prathumyot, H. Naito, H. Miyake","doi":"10.11248/JSTA.52.7","DOIUrl":"https://doi.org/10.11248/JSTA.52.7","url":null,"abstract":"","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123337608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1972-03-31DOI: 10.11248/JSTA1957.14.213
H. Mikoshiba
{"title":"Studies on the Downy Mildew Resistance in Maize Breeding:III. The effect of ear to row method for the selection of downy mildew resistant varieties","authors":"H. Mikoshiba","doi":"10.11248/JSTA1957.14.213","DOIUrl":"https://doi.org/10.11248/JSTA1957.14.213","url":null,"abstract":"","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1972-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127838484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1966-03-10DOI: 10.11248/JSTA1957.10.191
G. Nishikawa, T. Ueda
{"title":"Studies on the Ecological Adaptability and the Change in Properties of Products of Oil Crops:III. Effects of the stage of maturity upon the quality of castor seed oil","authors":"G. Nishikawa, T. Ueda","doi":"10.11248/JSTA1957.10.191","DOIUrl":"https://doi.org/10.11248/JSTA1957.10.191","url":null,"abstract":"","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1966-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129237749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Studies on the Cultivation and Oil Production of Citronella:III Effect of the part of a leaf on the content and physicochemical properties of the Oil","authors":"Y. Miyazaki, K. Ono, K. Nakahara","doi":"10.11248/JSTA1957.9.149","DOIUrl":"https://doi.org/10.11248/JSTA1957.9.149","url":null,"abstract":"","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1966-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121551319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Consideration to Utilize the Forest of Tropical Plateaus:Grafting of Castanea crenata on Quercus and Castanopsis Stocks","authors":"S. Miki","doi":"10.11248/JSTA1957.9.89","DOIUrl":"https://doi.org/10.11248/JSTA1957.9.89","url":null,"abstract":"","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1965-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114804513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yasuaki Sato, K. Komatsu, K. Kitanishi, Kagari Shikata-Yasuoka, Shingo Odani
Small scale banana cultivation for self-consumption and domestic market use yields almost half of banana production of the world. These bananas are more frequently cooked as staple food and snack, and used for brewing than eaten in the raw form. Each banana farming area has developed a unique set of cultivars°, cropping systems, and uses of bananas. Humid zones in the southern part of Ugandan, as well as Rwanda and western part of Tanzania, are famous areas for fanning unique banana cultivar subgroup called the East African highland bananas' (AAA-EA). As a conventional cropping system, it has extremely high productivity and supports local people in areas with one of the highest population density in Africa. However, in Uganda with population migration, land shortage, and pest and disease prevalence, areas that produced and supplied bananas to urban areas have drastically changed in the last half century. This paper reports the current situation of banana-based livelihood system of Nkore, formerly agro-pastoralists in Southwestern Uganda, presently the main banana producing area in Uganda. We describe their farming system, cultivars, uses, and distribution of bananas.
{"title":"Banana Farming, Cultivars, Uses, and Marketing of Nkore in Southwestern Uganda","authors":"Yasuaki Sato, K. Komatsu, K. Kitanishi, Kagari Shikata-Yasuoka, Shingo Odani","doi":"10.11248/JSTA.62.141","DOIUrl":"https://doi.org/10.11248/JSTA.62.141","url":null,"abstract":"Small scale banana cultivation for self-consumption and domestic market use yields almost half of banana production of the world. These bananas are more frequently cooked as staple food and snack, and used for brewing than eaten in the raw form. Each banana farming area has developed a unique set of cultivars°, cropping systems, and uses of bananas. Humid zones in the southern part of Ugandan, as well as Rwanda and western part of Tanzania, are famous areas for fanning unique banana cultivar subgroup called the East African highland bananas' (AAA-EA). As a conventional cropping system, it has extremely high productivity and supports local people in areas with one of the highest population density in Africa. However, in Uganda with population migration, land shortage, and pest and disease prevalence, areas that produced and supplied bananas to urban areas have drastically changed in the last half century. This paper reports the current situation of banana-based livelihood system of Nkore, formerly agro-pastoralists in Southwestern Uganda, presently the main banana producing area in Uganda. We describe their farming system, cultivars, uses, and distribution of bananas.","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115720726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Variation in Essential Oil Content and Composition during Leaf Development and Growth of Lemongrass","authors":"Hsin-i Wen, N. Aoki, R. Ohsugi","doi":"10.11248/JSTA.56.14","DOIUrl":"https://doi.org/10.11248/JSTA.56.14","url":null,"abstract":"","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116658420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Antifungal Activity of Collected in Subtropical Region, Okinawa, Against Magnaporthe oryzae","authors":"M. Ueno, N. Quyet, N. Shinzato, T. Matsui","doi":"10.11248/JSTA.60.48","DOIUrl":"https://doi.org/10.11248/JSTA.60.48","url":null,"abstract":"","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117171678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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