• Title/Summary/Keyword: 과실생장

Search Result 233, Processing Time 0.027 seconds

Fruit Productivity and Cold Hardiness as Affected by Fruit Setting of 'Wonhwang' Pear Trees ('원황' 배의 착과량 조절이 과실생산성과 내한성에 미치는 영향)

  • Kim, Byeong-Sam;Cho, Kyung-Chul;Ma, Kyung-Chul;Yun, Bong-Ki;Jung, Seok-Kyu;Choi, Hyun-Sug
    • Journal of Bio-Environment Control
    • /
    • v.26 no.2
    • /
    • pp.64-71
    • /
    • 2017
  • The study was performed on the effects of crop load of pear (Pyrus pyrifolia Nakai) trees on shoot growth, reserved nutrients, and fruit production for two years, as well as regrowth of cuttings treated with various cold temperatures in 2012 and 2013. Crop load adjustments included three levels of fruiting; 54 (60%), 90 (100%), and 126 fruits per tree (140%). As increasing crop load from 60% to 140%, water sprout growth decreased, and one-year old shoot resulted in declined concentrations of total carbon, macro-nutrients, and free sugar. The 140% of crop load greatly increased fruit yield of approximately 35 tons per ha in both 2011 and 2012 but slightly reduced weight, size, and soluble solid contents in fruit. However, 140% of crop load increased annual production income to approximately over 10 million won compared to the 60% and 100% of crop load. Germination rates in the cuttings did not rapidly decrease up to $-20^{\circ}C$ in a growth chamber condition. The 140% of crop load decreased germination rates less than 70% of cuttings grown under $-30^{\circ}C$. Amounts of electrolyte leakage in the cuttings under various cold temperatures were not significantly different among the adjustment of crop load.

Vine growth, fruit, and wine quality of red wine grapes cultivated in different trellises (양조용 적색 포도 품종의 수형에 따른 수체생장, 과실 품질 및 양조적성)

  • Jung, Sung Min;Hur, Youn Young;Lee, Dong Hun;Im, Dong Jun;Park, Seo Jun;Jeong, Seok Tae
    • Korean Journal of Food Science and Technology
    • /
    • v.52 no.3
    • /
    • pp.284-289
    • /
    • 2020
  • The cultivars of wine grapes 'Doonuri', 'Narsha', 'Cabernet Sauvignon', and 'Merlot' were cultivated in Modified-T (MT), Modified-T Cane pruning (MTC), and Geneva Double Curtain (GDC) trellises, and the changes in vine growth, fruit and wine characteristics were compared for two years (2018 and 2019). With respect to the vine growth characteristics, the wine grape cultivars cultivated in the GDC trellis were significantly inferior to those cultivated in the MT or MTC trellises. The grape yields of the cultivars cultivated in GDC trellise increased by 1.5 to 2 times cultivated in the GDC trellises compared to those cultivated in the other trellis, however, the fruit characteristics (total soluble solids, titratable acidity, and berry weight) did not differ among the differently cultivated groups. Moreover, the anthocyanin content and red color of the wine were significantly enriched in all red wine grape cultivars cultivated in the GDC trellises.

Photosynthesis, Shoot Growth and Fruit Quality in 'Fuji'/M.9 Mature Apple Trees in Response to Prohexadione-calcium Treatments (Prohexadione-calcium 처리에 따른 성목기 '후지'/M.9 사과나무의 광합성, 신초생장 및 과실품질)

  • Sagong, Dong-Hoon;Song, Yang-Yik;Park, Moo-Yong;Kweon, Hun-Joong;Kim, Mok-Jong;Yoon, Tae-Myung
    • Horticultural Science & Technology
    • /
    • v.32 no.6
    • /
    • pp.762-770
    • /
    • 2014
  • This study was conducted to elucidate the influence of prohexadione-calcium (Pro-Ca) application on shoot growth and fruit quality in 'Fuji'/M.9 mature apple trees. Pro-Ca was applied at concentrations ranging from 100 to $400mg{\cdot}L^{-1}$ one time at petal fall (PF; 5-10 cm terminal shoot growth) to the whole canopy of the tree, or at 100, 125, $150mg{\cdot}L^{-1}$ concentrations two times, at PF and then 4-8 weeks after PF. Pro-Ca treatment generally reduced mean shoot growth, with its effect being proportional to the application rate. Pro-Ca at $400mg{\cdot}L^{-1}$ significantly reduced the shoot growth by 15-22% compared to the control, while its effect was not significantly different from Pro-Ca $200mg{\cdot}L^{-1}$. Pro-Ca treatments induced higher occurrence of secondary growth compared to the control. Pro-Ca treatment increased the photosynthetic rate by 5-10% relative to the control, and also increased soluble solid concentration and fruit red color. However, fruit weight was significantly reduced by $400mg{\cdot}L^{-1}$ Pro-Ca, which was attributable to the greater secondary growth caused Pro-Ca $400mg{\cdot}L^{-1}$ treatment compared to the control and Pro-Ca $200mg{\cdot}L^{-1}$ treatment.

Optimal Harvest Time by the Seasonal Fruit Quality and Ripening Characteristics of Hardy Kiwifruit in Korea (다래 과실의 생육시기별 과실품질과 후숙 특성에 따른 수확적기)

  • Kim, Chul-Woo;Oh, Sung-Il;Kim, Mahn-Jo;Park, Youngki
    • Journal of Korean Society of Forest Science
    • /
    • v.103 no.3
    • /
    • pp.353-358
    • /
    • 2014
  • In order to obtain the basic data that could be used to evaluate the harvest time of new hardy kiwifruit cultivars (Actinidia arguta 'Saehan', 'Daesung' and 'Chilbo'), the seasonal fruit quality and ripening characteristics of hardy kiwifruit were investigated. Fruit sizes of 'Saehan', 'Daesung' and 'Chilbo' were increased from full bloom to 66 days, 85 days and 78 days, respectively. The growth curve of developing fruit of three cultivars showed double sigmoid. As a result of correlation analysis, the seed number per fruit showed a significant positive correlation with fruit weight (r = 0.94~0.97, p<0.01). Fruit length, width, thickness, weight, soluble solid content and titratable acidity were significantly different among the cultivars. Titratable acidity was increased from full bloom to harvest time and the titratable acidity of 'Saehan', 'Daesung' and 'Chilbo' were 1.77%, 1.22% and 1.37% on havest time, respectively. Optimal harvest time of 'Saehan' was 108 days (23 Sep.) after full bloom, those of 'Daesung' and 'Chilbo' were 92 (9 Sep.) days after full bloom.

Tolerance of Rice, Soybean, and Hot Pepper to Simulated Acid Rain at Different Growth Stages (벼, 콩, 고추의 생육시간별 인공 산성비에 대한 내성)

  • 이석순;김태주;김복진
    • KOREAN JOURNAL OF CROP SCIENCE
    • /
    • v.39 no.6
    • /
    • pp.548-555
    • /
    • 1994
  • To compare the tolerance of crops to acid rain at different growth stages a simulated acid rain (SAR) of pH 2.7 was applied to rice, soybean, and hot pepper from vegetative growth stage to harvest (Veget.-Harvest) and from reproductive growth stage to harvest (Reprod.-Harvest). Visual damages of crops by SAR were greater in the order of rice < hot pepper < soybean and greater at Veget.-Harvest than at Reprod.-Harvest treatment. Chlorophyll content of all crops was greater in the order of Veget.-Harvest < Reprod.-Harvest treatment < control, but photosynthetic activity was not affected by SAR treatments. Nitrogen concentration and uptake of rice plants at harvest were similar among SAR treatments, but those of soybean and hot pepper were greater at Veget.-Harvest treatment than at Reprod.-Harvest treatment or control. Sulfur concentration of all crops was not affected by SAR treatments, but total sulfur uptake of soybean was greater in SAR treatments than untreated control. Grain yield of rice and soybean was not affected by SAR although grain fertility, percent ripened grains, and 1,000-grain weight of rice at Veget.-Harvest treatment were lower compared with Reprod.-Harvest treatment or control. Fruit dry weight of hot pepper was greater in the order of Veget.-Harvest < Reprod.-Harvest < control due to decreased fruit number per plant and average fruit weight. At one time application of SAR at flowering stage, brown spots were observed on the spikelets of rice at below pH 2.3. Petals of soybean and hot pepper were wilted at pH below 1. 7 and 2.0, respectively, but fruit setting was not affected by the pH of the SRA.

  • PDF

Effects of Rootstocks and Nitrogen Levels on Plant Growth, Fruit Quality and Infection of Root Rot Fusarium Wilt Disease in the Grafted-Tomato Plant (대목의 종류와 질소비요의 시용량이 접목 토마토의 생장, 과실의 품질 및 뿌리썩음시들음병발생에 미치는 영향)

  • 정희돈;윤선주;최영준
    • Journal of Bio-Environment Control
    • /
    • v.6 no.3
    • /
    • pp.151-158
    • /
    • 1997
  • Tomato (lycopersicon esculentum Mill.‘Sunroad’) seedlings grafted onto the four different rootstocks, ‘Anchor-T’, ‘Kagemushia’, ‘Joint’ and ‘Vulcan’, and fed with different amount of nitrogen were investigated for their susceptibility to the root rot Fusarium wilt (Fusarium oxysporum Schl. f. sp. lycopersici Snyder et Hansen, race J$_3$) disease, plant growth, and fruit quality. The flowering of the first flower cluster was promoted in grafted plants (GP) as compared to non-grafted (NG) ones. The plant height was increased by the grafting, and the growth and stem diameter were enhanced with increased nitrogen levels. Grafted plants were little affected by the Fusarium wilt disease except ‘Anchor-T’rootstock (64.7% infection). The rate of malformed, underdeveloped, and gray-mold infected fruits were reduced in the grafted plants regardless of the rootstocks. Soluble solid content, sugars, ascorbic acids and organic acids did not show any difference between grafted and non grafted plants, but ascorbic acid tends to be reduced in the high nitrogen treatment. Content of N, Ca and Mg in leaves were greatly increased in the GP grown with high nitrogen level (30kg.㏊$^{-1}$ ).

  • PDF

Effects of Rootstocks and Nitrogen Levels on Plant Growth, Infection of Root Rot Fusarium wilt Disease, and Fruit Quality in the Grafted-Tomato Plants (대목 및 질소비료의 시용량이 접목 토마토의 생장, 뿌리 썩음병의 이병 및 과실의 품질에 미치는 영향)

  • 정희돈;윤선주;최영준
    • Proceedings of the Korean Society for Bio-Environment Control Conference
    • /
    • 1997.11a
    • /
    • pp.66-71
    • /
    • 1997
  • 우리나라에서 토마토재배는$^{10)}$ 94.7%가 시설재배를 하고 있는데 연작에 따른 각종 장해가 발생하고 있다. 연작은 여러 가지 생리적 장해 또는 병충해의 만연$^{8)}$ 이 있으나 가장 치명적인 것이 뿌리썩음시들음병(근부위조병, Fusarium oxyporum Schl. f. sp. lycopersici Snyder et Honsen, race J$_3$)으로 한번 발병하면 방제가 되지 않는다. (중략)

  • PDF

Occurrence of Bacterial Black Spot on Plum by Xanthomonas aboricola pv. pruni and It's Pathogenicity on Varieties of Some Stone Fruits (Xanthomonas aboricola pv. pruni에 의한 자두 검은점무늬병의 발생과 핵과류 과수 품종에 대한 병원성)

  • Ryu, Young-Hyun;Lee, Joong-Hwan;Kwon, Tae-Young;Kim, Seung-Han;Kim, Dong-Geun
    • Research in Plant Disease
    • /
    • v.18 no.1
    • /
    • pp.40-44
    • /
    • 2012
  • Xanthomonas arboricola pv. pruni is the causal agent of bacterial black spot disease on some stone fruits, e.g. peach, plum and apricot. To evaluate pathogenicity of Xanthomonas arboricola pv. pruni strain from plum, inoculum of the isolated strain was spray inoculated to fruits and leaves of apricot, Japanese apricot and plum. Apricot and Japanese apricot showed severe black spot symptoms on fruits and shot hole symptoms on leaves. In case of apricot, about fifty percent of fruits did not grow and dropped by hypersensitive reaction to spray infection. Plum, cv. Formosa was very susceptible, showing severe black injury lesions on fruits and cankers on leaves and new twigs. On the other hand, plum cv. Daesukjosaeng, was highly resistant. Fruits of several plum cultivars such as Formosa and Chuhee were severely infected at natural infected orchards by X. arboricola pv. pruni. Where as those of Daesukjosaeng, Taeyang, Soldam and Hongrogen were moderately infected.

Applications of Artificial Pollination, Spraying Gibberellin A4+7 Plus Benzyladenine for Production of Uniform Fruits in 'Fuji' Apples (인공수분(人工受粉) 및 Promalin 처리에 의한 사과 '후지' 품종(品種)의 과형(果形) 개선(改善))

  • Park, Jeong-Gwan;Hong, Jae-Seong;Choi, In-Myung;Kim, Jung-Bae;Kim, Seong-Ho;Park, Hee-Sung
    • Horticultural Science & Technology
    • /
    • v.16 no.1
    • /
    • pp.27-29
    • /
    • 1998
  • Artificial pollination (AP) and gibberellin A4+7 plus benzyladenine (promalin) were applied alone and together. AP was applied at 10% flowering time with 'Senshu' pollen (Malus domestica cv. Senshu). 12mg/L promalin was applied at 0, 10 and 20 days after falling of central flowers, respectively. In promalin treatment with or without AP application methods, fruit length, weight and length/diameter (L/D) were higher than those of control and AP. However, in AP and AP+ promalin application, the number of seeds and seed weight were higher than those of control and promalin. In AP+ promalin treatment, 78.6% fruits showed their uniform fruit shape and so significantly enhanced fruit uniformity compared to other treatments. Also cortex and core thickness of fruits were greater at the apex than that of other treatment. Fruit with L/D ratio over 0.87 were highly produced by applications of AP+promalin and promalin than control and AP only. 'Fuji' apples in good shape can be produced by using of AP + promalin together.

  • PDF

Effect of Artificial Pollination, Pollination Time, and Pollen Bulking Agent on Seed Formation and Fruit Quality in the Shelter Greenhouse Cultivation of Kiwifruit (비가림 시설재배에서 인공수분, 수분시기 및 화분증량제가 참다래의 종자형성과 과실특성에 미치는 영향)

  • Lim, Kyeong-Ho;Kim, Wol-Soo;Lee, Sang-Hyun
    • Journal of Bio-Environment Control
    • /
    • v.23 no.3
    • /
    • pp.256-261
    • /
    • 2014
  • This study was carried out to determine the effect of the artificial pollination on fruit set, seed formation and fruit quality in kiwifruit and to confirm the effective pollination time for optimal fruit set in the shelter greenhouse cultivation. Also, the effect of artificial pollination practice by the pollen diluent solution was tested. By artificial pollination, fruit set, seed formation, and fruit quality was improved both in the open field condition and in the shelter greenhouse cultivation. In order to find the effective pollination period (EPP), artificial pollination was carried out every day until 7 days after full bloom. Number of seeds and fruit set rate and fruit growth of kiwifruit were no significantly different until 4 days after full bloom (DAFB), but, those of kiwifruit from 5 DAFB significantly decreased. Consequently, the effective pollination period of kiwifruit in the shelter greenhouse was 4 days after full bloom. Also, artificial pollination by the pollen diluent solution was showed the similar fruit set and fruit quality compare to that by lycopodium powder. Accordingly, artificial pollination by the pollen diluent solution should be very effective practice for labor saving in kiwifruit cultivation.