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Volume 33, Issue 1
Displaying 1-10 of 10 articles from this issue
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Shigeru HISAJIMA, Yuji ARAI, Kamolpun NAMWONGPROM, Suranant SUBHADRABA ...1989 Volume 33 Issue 1 Pages 1-5
Published: March 01, 1989
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSMicroplant propagation of cucumber plant was examined. (1) Multiple shoot buds were induced from cucumber seedlings by BAP in vitro. (2) Shoots were continuously multiplied by using combinations of BAP and IBA. One can calculate that more than 1, 600, 000 shoots coud be obtained from a single shoot within a year using the present technique. (3) Plant regeneration was achieved by rooting single shoots. The rooting rate was 100% at all concentrations of IBA used. (4) Regenerated plants were successfully grown in semi-aquaculture condition and produced normal fruits.View full abstractDownload PDF (4422K) -
Jinda SORNSRIVICHAI, Panumart ANUSADORN, Chiaki OOGAKI, Hiroshi GEMMA1989 Volume 33 Issue 1 Pages 6-17
Published: March 01, 1989
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSMango is the fruit crop ranked in importance and is widely consumed in Thailand. The harvesting season in Thailand is limited and only about one month in spring. Mango fruits, like other tropical fruits, are susceptible to decay during their postharvest life and various researches have been conducted to seek treatments and techniques to maintain and extend postharvest life.
This study was undertaken to investigate the influence of packaging of ‘Keaw Sawoey’ mango fruits in different kind of plastic films or MA storage in polypropyrene bag and the effects of low pressure on the ripening and quality of fruits kept under ambient temperature (28-33°C) and 13°C.
Mature green fruits of mango cv. ‘Keaw Sawoey’ were individually seal-packaged in polyethylene (PE, 0.011mm) or polyvinyl chloride (PVC, 0.014mm) films and stored at 13°C with 78%RH and ambient temperature (28-33°C) with 80±2%RH. The fruits seal-packaged with plastic films could be maintained the acceptable quality as green consumable stage for 6-9 days and 30-36 days at ambient temperature and 13°C, respectively, while the unpackaged fruits were shrivelled and overripe within a short time. Hence, this represented extention of the storage life for 3-6 days and 2-3 weeks over the unpackaged control. PVC packaging was more effective to delay the fruit ripening better than PE packaging. The mango fruits stored in polypropylene bag (PP, 0.031mm) with air and with 5% CO2 and 5% O2 or under low pressure (260 Torr), although they were unripe, suffered from fermentation after 1 and 3 weeks during storage at 13°C.View full abstractDownload PDF (1568K) -
Arom SRIPICHITT, Eiji NAWATA, Shoji SHIGENAGA1989 Volume 33 Issue 1 Pages 18-24
Published: March 01, 1989
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSStudies of deteriorative changes were made on soybean (Glycine max (L.) Merr.) seeds which were stored for 18 months with 4 initial moisture contents (6, 8, 10 and 12%) at 26±1°C and 80±5% relative humidity. In seeds containing 6 and 8% moisture contents, there were a little changes in germination, coefficient of velocity of germination (CVG), electrolyte, sugar leakages and water uptake, whereas seedling growth rate (SGR), seedling length and respiration of hypocotyl decreased gradually. Seeds with 10 and 12% moisture contents showed decreases in germination, CVG, SGR, seedling length and respiration of hypocotyl with increases in electrolyte leakage, water uptake and sugar leakage. The effect of moisture content of seeds on deteriorative changes is duscussed.View full abstractDownload PDF (890K) -
Tadashi YAMAGUCHI, Naotsugu UCHIDA, Takeshi YASUDA1989 Volume 33 Issue 1 Pages 25-30
Published: March 01, 1989
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSPlant growth, photosynthesis and some physiological characteristics of floating rice grown under conditions in which water level was raised at a rate of 4 cm per day (deeply submerged condition) at the 10th or 11th leaf emergence stage were compared with those in a water depth of about 3 cm (control) . Plants grown under the deeply submerged conditions showed vigorous internodal elongation and had one more leaf compared to those in the control. In 5 of 6 varieties used, photosynthetic rates of the fully expanded uppermost leaves that developed at the same time were higher in the deeply submerged conditions than in the control. The same was true for total photosynthetic rate of fully expanded top three leaves which comprised the majority of photosynthesis per main culm.View full abstractDownload PDF (762K) -
Yoshihiro HAYAMICHI1989 Volume 33 Issue 1 Pages 31-37
Published: March 01, 1989
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESS -
Quazi Rezaul ISLAM, Hiroyuki TERAO, Jun INOUYE1989 Volume 33 Issue 1 Pages 38-42
Published: March 01, 1989
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSUnder 16% soil moisture content conditions at 30°C in darkness, the mesocotyl length of Bangladesh deepwater rice varieties ranged from 2 to 173mm with an average of 33±18.5mm. In about 34% of varieties mesocotyl length varied from 51 to 100mm, and in about 15% of varieties mesocotyl was longer than 100mm. Among the varieties from three land levels, the average mesocotyl length was largest in the varieties from the lowlands, next in the varieties from medium lowlands and the smallest was in the varieties from medium highlands. An inverse relationship between mesocotyl elongation and plant elongation ability was observed (r=-0.293, n=188) .View full abstractDownload PDF (618K) -
Hasan BIN MAD, Hiroaki INOUE1989 Volume 33 Issue 1 Pages 43-45
Published: March 01, 1989
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSDownload PDF (4419K) -
Yoshihiko NISHIMURA1989 Volume 33 Issue 1 Pages 46-54
Published: March 01, 1989
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSDownload PDF (3008K) -
Sumio ICHIKAWA1989 Volume 33 Issue 1 Pages 55-61
Published: March 01, 1989
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSDownload PDF (2353K) -
Akio OSADA1989 Volume 33 Issue 1 Pages 62-69
Published: March 01, 1989
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSDownload PDF (1229K)
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