Modeling Winter Dormancy of Tea Buds and Simulation in Southern Japan
ISSN | 00213551 |
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NII recode ID (NCID) | AA0068709X |
As part of the research aimed at elucidating the cause of low tea yields in the first crop in southern Japan, the relation of climatic conditions to winter bud dormancy was investigated using mature ‘Yabukita’ (Camellia sinensis (L.) O. Kuntze) plants at the Makurazaki Station (N 31° 16.1´) of the National Institute of Vegetable and Tea Science (NIVTS), Japan, as a model. The number of days required for flushing (RDF), when winter tea branches were kept under optimal artificial conditions (25°C, 14-hour daylength and 80% relative humidity), was used as an indicator for expressing the degree of winter bud dormancy. RDF was well predicted by the model [-aT-bD+c (T: mean temperature, D: daylength and a,b,c: parameters)] with the lowest standard error (1.71) and the lowest value of Akaike’s Information Criterion (AIC = 124.06). The simulation of winter bud dormancy indicated that tea grown in Okinawa located in the southernmost region of Japan (N 26° 13´) is highly susceptible to sudden flushing during winter. The results suggested that urgent measures should be taken to alleviate low tea yields in the first crop in southern Japan.
Date of issued | |
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Creator | OMAE Hide TAKEDA Yoshiyuki |
Subject |
Camellia sinensis flushing cold tolerance daylength |
Publisher | Japan International Research Center for Agricultural Sciences |
Available Online | |
NII resource type vocabulary | Journal Article |
Volume | 37 |
Issue | 3 |
spage | 189 |
epage | 194 |
DOI | 10.6090/jarq.37.189 |
Rights | Japan International Research Center for Agricultural Sciences |
Language | eng |