Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
권호 표지

Seasonal and Daily Patterns of Xylem Sap Transportation in 'Fuji'/M.9 Apple Trees

사과 '후지'/M.9의 생육기 수액 이동 양상

Park, Jeong-Gwan;Kim, Seon-Kyu;Lee, Jae-Young;Kim, Seong-Hee;Sin, Yong-Eok
박정관;김선규;이재영;김승희;신용억

  • Published : 20040000
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Abstract

This trial was conducted to find out the amount and velocity of xylem sap during growing season in four-year-old 'Fuji'/M.9 apple trees. The total amount and average velocity of xylem sap from April 4 to October 20 were 566.5 L․tree^-^1 and 12.9 cm․hr^-^1․tree^-^1, respectively. Xylem sap increased from April, peaked in May and again in August, then decreased to the same level as April. Weather conditions affected xylem sap transport because the transport showed similar tendency with vapor pressure deficit (VPD) value from mid June to late September. As comparing the relationship between xylem sap transport in a day and weather conditions according to growing stage or time, the xylem sap transport of early or later stage was more affected by the degree of tree growth than weather conditions. However, it could be thought that the transport from June to August was chiefly affected by weather conditions.

‘후지’/M.9 4년생 나무에서 수액이동과 수액이동 속도를 2001년 4월 4일부터 10월 20일까지 조사한 결과, 주당 수액이동은 566.5L/주, 평균 수액이동속도는 12.9cm/hr/주 인 것으로 나타났다. 월별 수액이동 양상은 4월부터 증가하기 시작하여 5월과 8월에 최대치를 보였고 9월 이후 감소되어 4월 수준과 비슷한 양상을 보였다. 수액이동 양상은 5월 하순부터 VPD 값과 유사한 양상을 보임에 따라 기후적 요인이 수액이동에 영향을 미치는 것으로 나타났다. 생육단계 및 시기별 일중 수액이동과 기후요소의 관련성을 알아본 결과, 생육 초기나 후기의 경우, 기후요소보다는 수체 생육의 발달정도에 따라 수액이동 차이가 나타나는 것으로 생각되었고, 생육성기인 6월부터 8월까지는 기후요소가 수액이동에 유의한 영향을 미치는 것으로 나타났다.

Keywords

References

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