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Shoot Growth and Fruit Characteristics of 'Soomee' Peach according to Length of Fruit Bearing Branch

결과지 길이에 따른 복숭아 '수미'의 신초 생장 및 과실 특성

  • 김호철 (원광대학교 원예산업학부)
  • Received : 2018.10.22
  • Accepted : 2018.12.21
  • Published : 2019.02.28

Abstract

We analyzed the correlation among fruit bearing branch (FBB) and shoot and fruit characteristics in order to select the length of FBB suitable for producing high-quality fruits of 'Soomee', a peach tree developed in Korea. The length and diameter of FBB were 26.1 cm and 6.1 mm, respectively, shoot and leaf number per FBB were 3.2 and 38.6, respectively. Of these, the coefficient of variation was very high in the shoots and leaf number. The average weight and soluble solid content (SSC) of fruit were 298.6 g and 12.2 Brix, respectively, and coefficient of variation of the fruit weight was 18.0 %, which was higher than that of SSC. As the FBB of 10-20 cm and 20-30 cm length per tree were 27.1 % and 25.4 %, respectively, the sum of short and middle FBB frequency per tree was more than 50 %. Fruits of 250-350 g and 11.0-13.0 Brix per tree were distributed in 68.6 % and 74.0 %, respectively. As a result of correlation analysis, fruit weight and shoot number were affected by the length of FBB. In particular, length of FBB showed the relation of fruit weight with $y=-0.0482x^2+2.4512x+277.36$. As a result, the length of FBB that can maximize fruit weight was analyzed as 25.4 cm. Therefore, in the filed, the suitable FBB for producing 'Soomee' peach is estimated to be about 20-30 cm.

국내에서 육성된 복숭아인 '수미'의 고품질 과실을 생산을 하는데 적합한 결과지 길이를 선발하기 위하여 결과지 길이와 신초 및 과실 특성들과의 상관성을 분석하였다. 결과지의 길이와 직경은 각각 평균 26.1cm와 6.1mm이었고, 결과지 당 신초 및 잎 수는 각각 평균 3.2개와 38.6장이었다. 그리고 변이계수는 이들 중 신초 및 잎 수에서 매우 높았다. 조사된 결과지에서 생산된 과실 무게는 평균 298.6g, 과실 당도는 12.2Brix였고, 변이계수는 과실 무게에서 18.0%로 당도보다 높았다. 나무 당 10-20cm와 20-30cm 길이의 결과지가 각각 27.1%와 25.4% 분포함으로서 단 중과지의 비율이 50% 이상이었다. 그리고 나무 당 250-350g과 11.0-13.0Brix의 과실이 각각 68.6%와 74.0% 분포하였다. 조사된 특성 간 상관분석 결과, 과실 무게와 결과지 당 신초 수는 결과지 길이의 영향을 받는 것으로 나타났다. 특히 과실 무게와는 $y=-0.0482x^2+2.4512x+277.36$의 관계를 나타내어 최대 과실 무게를 생산하는 결과지의 길이는 25.4cm로 분석되었다. 따라서 복숭아 '수미'의 결과지 길이는 20-30cm 정도가 적합할 것으로 판단된다.

Keywords

GJMGCK_2019_v5n1_347_f0003.png 이미지

그림 3. 수확기 복숭아 ‘수미’의 결과지 길이와 신초 수 및 과실 무게 간 관계 Figure 3. Relationship between length of fruit bearing branch and shoot number, fruit weight in 'Soomee' peach tree at harvest time. *, ** Significant at P=0.05, 0.01, respectively.

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그림 1. 성숙기 복숭아 ‘수미’ 신초 특성에 따른 빈도 Figure 1. Frequency in branch characteristics in 'Soomee' peach tree at harvest time.

GJMGCK_2019_v5n1_347_f0005.png 이미지

그림 2. 수확기 복숭아 ‘수미’ 과실 특성에 따른 빈도 Figure 2. Frequency in fruit characteristics of 'Soomee' peach tree at harvest time.

표 1. 성숙기에 복숭아 ‘수미’의 결과지 특성별 최대값, 최소값, 평균값, 변이계수 Table 1. Maximum, minimum, Mean, standard deviation, and coefficients of variance per characteristics of fruit bearing branch (FBB) in 'Soomee' peach tree at harvest time.

GJMGCK_2019_v5n1_347_t0005.png 이미지

표 2. 성숙기에 복숭아 ‘수미’ 과실 특성별 최대값, 최소값, 평균값, 변이계수 Table 2. Maximum, minimum, and mean values, standard deviation, and coefficients of variance of fruit characteristics in 'Soomee' peach tree at harvest time.

GJMGCK_2019_v5n1_347_t0006.png 이미지

표 3. 수확기 복숭아 ‘수미’의 결과지 길이에 따른 신초생장 및 과실특성 차이. Table 3. Shoot and fruit characteristics according to length of fruit bearing branch (FBB) in 'Soomee' peach tree at harvest time.

GJMGCK_2019_v5n1_347_t0007.png 이미지

표 4. 수확기 복숭아 ‘수미’의 결과지 길이와 다른 특성 간 상관계수. Table 4. Correlation coefficient among length of fruit bearing branch (FBB) and the other characteristics in 'Soomee' peach tree at harvest time.

GJMGCK_2019_v5n1_347_t0008.png 이미지

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