{"title":"Resistance of Rice Genotype CRR-99-95W to the Sorghum Plant Bug, Stenotus rubrovittatus and the Suitable Period for Screening","authors":"K. Sugiura, Aoi Hamagashira, Yasuto Ide, A. Ikeda","doi":"10.1626/jcs.91.147","DOIUrl":"https://doi.org/10.1626/jcs.91.147","url":null,"abstract":"","PeriodicalId":14784,"journal":{"name":"Japanese Journal of Crop Science","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81713782","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}
Yumiko Arai-Sanoh, Masaki Okamura, S. Yoshinaga, Shiori Yabe, H. Ogiwara, N. Kobayashi
{"title":"Factors Affecting Variance in Yield Caused by Different Transplanting Times in High-Yield and Good-Eating-Quality Rice","authors":"Yumiko Arai-Sanoh, Masaki Okamura, S. Yoshinaga, Shiori Yabe, H. Ogiwara, N. Kobayashi","doi":"10.1626/jcs.91.129","DOIUrl":"https://doi.org/10.1626/jcs.91.129","url":null,"abstract":"","PeriodicalId":14784,"journal":{"name":"Japanese Journal of Crop Science","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76957983","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":"The Effect of Fertilization Rate and Planting Density on the Growth and Grain Yield of High-yielding Rice (Oryza sativa L.) Cultivar “Yukigozen” in Hokkaido","authors":"S. Hayashi","doi":"10.1626/jcs.91.153","DOIUrl":"https://doi.org/10.1626/jcs.91.153","url":null,"abstract":"","PeriodicalId":14784,"journal":{"name":"Japanese Journal of Crop Science","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80936830","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}
Megumi Kashiwagi, Senri Ohishi, K. Murata, Hidenobu Ozaki, T. Yamada, M. Kanekatsu
: The tolerance to high temperature during the treatment for disinfection in rice seeds is strengthened by reducing their water contents to below 10% before the hot water disinfection treatment. Pre-drying treatment prevents the reduction in germinability of the seeds disinfected with hot water at 65ºC for 10 minutes, which is a method used to effectively control several seed-borne diseases. We examined the conditions for pre-drying of seeds using a heating dryer for improving the germinability after the disinfection treatment. The seeds of Nipponbare were dried at 40 – 60ºC for 2 – 72 hours. A higher temperature was more effective for drying. When the seeds were dried at 40ºC, 12 hours of treatment was required to reduce the water content to below 10%. Thereafter, the water content rapidly decreased to around 8% by further heating, but the speed of decrease dropped and the values remained above 7% in the seeds dried for 24 hours at 50ºC. The germinability was not changed by further decrease in water content to less than 7%. In some cases, the seeds dried at 60ºC for 72 hours had lower germinability. Moreover, experimental results using Koshihikari showed that the seeds with a water content reduced to below 9.5% by pre-drying had a germination rate of more than 90%, even after the seeds were disinfected with hot water at 72ºC for 10 min. Taken together, we concluded that pre-drying to a water content of 7 – 9.5% in seeds at 40 – 50ºC for 12 – 24 hours is the most useful method for pre-drying the seeds of Nipponbare and Koshihikari before the hot-water disinfection treatment.
{"title":"Establishment of a Pre-Drying Methods for Hot Water Disinfection of Rice Seeds at a High Temperature","authors":"Megumi Kashiwagi, Senri Ohishi, K. Murata, Hidenobu Ozaki, T. Yamada, M. Kanekatsu","doi":"10.1626/jcs.91.120","DOIUrl":"https://doi.org/10.1626/jcs.91.120","url":null,"abstract":": The tolerance to high temperature during the treatment for disinfection in rice seeds is strengthened by reducing their water contents to below 10% before the hot water disinfection treatment. Pre-drying treatment prevents the reduction in germinability of the seeds disinfected with hot water at 65ºC for 10 minutes, which is a method used to effectively control several seed-borne diseases. We examined the conditions for pre-drying of seeds using a heating dryer for improving the germinability after the disinfection treatment. The seeds of Nipponbare were dried at 40 – 60ºC for 2 – 72 hours. A higher temperature was more effective for drying. When the seeds were dried at 40ºC, 12 hours of treatment was required to reduce the water content to below 10%. Thereafter, the water content rapidly decreased to around 8% by further heating, but the speed of decrease dropped and the values remained above 7% in the seeds dried for 24 hours at 50ºC. The germinability was not changed by further decrease in water content to less than 7%. In some cases, the seeds dried at 60ºC for 72 hours had lower germinability. Moreover, experimental results using Koshihikari showed that the seeds with a water content reduced to below 9.5% by pre-drying had a germination rate of more than 90%, even after the seeds were disinfected with hot water at 72ºC for 10 min. Taken together, we concluded that pre-drying to a water content of 7 – 9.5% in seeds at 40 – 50ºC for 12 – 24 hours is the most useful method for pre-drying the seeds of Nipponbare and Koshihikari before the hot-water disinfection treatment.","PeriodicalId":14784,"journal":{"name":"Japanese Journal of Crop Science","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75613173","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}
Tetsuya Ishikawa, S. Yokota, M. Hirata, Haruki Ogawa, Shinichi Ogasawara, Ryuzo Nakamura, S. Yoshinaga
{"title":"Validation of Proposal for Improvement in Data-driven Large-scale Rice Cultivation with Field-specific Datasets","authors":"Tetsuya Ishikawa, S. Yokota, M. Hirata, Haruki Ogawa, Shinichi Ogasawara, Ryuzo Nakamura, S. Yoshinaga","doi":"10.1626/jcs.91.163","DOIUrl":"https://doi.org/10.1626/jcs.91.163","url":null,"abstract":"","PeriodicalId":14784,"journal":{"name":"Japanese Journal of Crop Science","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82094586","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":"Heat Generation, Germination and Seedling Establishment Characteristics of Tetsukuro Coated Seeds","authors":"Masami Furuhata, M. Kurokawa","doi":"10.1626/jcs.91.170","DOIUrl":"https://doi.org/10.1626/jcs.91.170","url":null,"abstract":"","PeriodicalId":14784,"journal":{"name":"Japanese Journal of Crop Science","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81261268","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":"Characteristics of Sugarcane Varieties Related to the Number of Undamaged Buds per Unit Weight of Setts after Mechanical Harvesting for Billet Planting","authors":"T. Hattori, K. Adachi, Yasuaki Tamura","doi":"10.1626/jcs.91.111","DOIUrl":"https://doi.org/10.1626/jcs.91.111","url":null,"abstract":"","PeriodicalId":14784,"journal":{"name":"Japanese Journal of Crop Science","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79638594","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. Nakagomi, H. Fujimoto, G. Ishioka, H. Sasahara, Akiko Shigemune, O. Ideta
: This study was conducted in the Western Region Agricultural Center (Fukuyama City, Hiroshima Prefecture) to elucidate the changes in feed composition and contents in rice after heading. In 2007, we cultivated a short panicle cultivar, “Tachi-Ayaka” using two different transplanting times. In 2018, we cultivated four short- panicle varieties with different heading dates: “Tsuki-Hayaka”, “Tsuki-Ayaka”, “Tsuki-Suzuka”, and “Tsuki-Kotoka”. We investigated their top dry weight and their feed composition and contents from heading date to about 70 days after heading. The feed composition and contents varied greatly up to 40 days after heading. Specifically, crude protein (CP) and acid detergent fiber (ADF) decreased, crude ash (CA) and hemicellulose hardly changed; and, non-fibrous carbohydrate (NFC) increased. Top dry weight peaked at 30-40 days after heading in all transplanting times and varieties. Increased in weight between heading and 40 days after heading of NFC, hemicellulose and CA accounted for 71%, 19% and 8%, respectively, of that of top dry weight. We conclude that wide variation in feed composition content up to 40 days after heading was mainly due to the increase in NFC dry weight. The feed composition content was stable from 30 days after heading because the variation in NFC dry weight was very small.
{"title":"Changes in the Feed Composition Content of Short-Panicle Rice Varieties after Heading in the Western Region of Japan","authors":"K. Nakagomi, H. Fujimoto, G. Ishioka, H. Sasahara, Akiko Shigemune, O. Ideta","doi":"10.1626/jcs.91.59","DOIUrl":"https://doi.org/10.1626/jcs.91.59","url":null,"abstract":": This study was conducted in the Western Region Agricultural Center (Fukuyama City, Hiroshima Prefecture) to elucidate the changes in feed composition and contents in rice after heading. In 2007, we cultivated a short panicle cultivar, “Tachi-Ayaka” using two different transplanting times. In 2018, we cultivated four short- panicle varieties with different heading dates: “Tsuki-Hayaka”, “Tsuki-Ayaka”, “Tsuki-Suzuka”, and “Tsuki-Kotoka”. We investigated their top dry weight and their feed composition and contents from heading date to about 70 days after heading. The feed composition and contents varied greatly up to 40 days after heading. Specifically, crude protein (CP) and acid detergent fiber (ADF) decreased, crude ash (CA) and hemicellulose hardly changed; and, non-fibrous carbohydrate (NFC) increased. Top dry weight peaked at 30-40 days after heading in all transplanting times and varieties. Increased in weight between heading and 40 days after heading of NFC, hemicellulose and CA accounted for 71%, 19% and 8%, respectively, of that of top dry weight. We conclude that wide variation in feed composition content up to 40 days after heading was mainly due to the increase in NFC dry weight. The feed composition content was stable from 30 days after heading because the variation in NFC dry weight was very small.","PeriodicalId":14784,"journal":{"name":"Japanese Journal of Crop Science","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75330329","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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