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종자발아율, 수량, 그리고 화분발아율 비교를 통한 내서성 고추 자원 선발
서태철,양은영,조명철,Marteen Van Zonneveld,Roland Schafleitner,Derek Barchenger,Sanjeet Kumar,Susan Lin,Eric Shen,강석범 한국국제농업개발학회 2020 韓國國際農業開發學會誌 Vol.32 No.3
본 연구는 농촌진흥청 국립원예특작과학원 채소과에서 육성 중인 고추 34계통과 세계채소센터 육성 계통과 자원 12점 등 총 46점의 고추를 공시하여, 종자의 발아율, 수량 및 상품과율, 그리고 화분발아율을 조사하여 내서성이 강한 고추 자원을 선발하기 위하여 수행되었다. 1. 종자발아율 비교에서 여름종자는 가을종자 대비 상대적인 피해율은 4.3~100% 범위였고, H42(1.6%), H16(5.0%), H14(6.3%), H02(12.4%), H44(13.7%), H12(15.9%), H03 (17.6%), H17(23.4%) 순으로 대조 계통인 H37(26.2%)에 비해 피해율이 낮았다. 2. 고추 과실의 수량은 34.4~446.5g, 총 과실수는 2.0~134.3 개를 나타냈다. 상품과 비율에 있어서 75% 이상은 H22(95.0%), H16(89.1%), H37(88.4%), H40(86.4%), H6 (86.0), H27(83.7%), H04(83.6%), H03(82.6%), H08(81.1%), H44(81.4%), H02(80.0%), H45(79.1%), H17(78.7%), H19 (77.7%), H34(77.0%), H15(76.9%), H42(76.3%) 순으로 나타 났다. 3. 고온 처리에 의한 화분발아율의 피해율은 H06(59.5%), H14(74.4%), H44(85.3%), H03(90.2%)가 대조구인 H37 (94.7%)과 나머지 다른 고추에 비해 상대적으로 낮았다. 이상의 결과, 가을종자 대비 여름종자 종자발아율의 피해율, 수량 및 상품과율, 그리고 고온 처리에 의한 화분발아율 등을 고려하여, H03, H04, H06, H14, H17, H22, H44, H45 계 통을 내서성이 높은 자원으로 선발하였다. This study was conducted to select heat tolerant pepper accessions in tropical regions. Fruit yield and pollen germination rate between heat stress and normal condition as well as germination rate between seeds harvested in summer and fall were compared using 46 pepper accessions including 34 from Rural Development Administration and 12 from World Vegetable Center. For seed germination rate, the relative injury rate of summer seed ranged between 4.3 to 100%. Among accessions, H42 (1.6%), H16 (5.0%), H14 (6.3%), H02 (12.4%), H44 (13.7%), H12 (15.9%), H03 (17.6%) and H17 (23.4%) showed lower injury rate in seed germination than H37 (26.2%) which is known for its heat tolerance. Fruit yield and number per plant were in the range of between 34.4 to 446.5g and 2.0 to 134.3 fruits, respectively. The marketable fruit ratio ranged between 41.0 to 95.0% and accessions producing marketable fruits more than 75% were H22 (95.0%), H16 (89.1%), H37 (88.4%), H40 (86.4%), H6 (86.0), H27 (83.7%), H04 (83.6%), H03 (82.6%), H08 (81.1%), H44 (81.4%), H02 (80.0%), H45 (79.1%), H17 (78.7%), H19 (77.7%), H34 (77.0%), H15 (76.9%), and H42 (76.3%). The relative injury rate of pollen germination in heat stress condition was low in H06 (59.5%), H14 (74.4%), H44 (85.3%) and H03 (90.2%) compared to a control, H37 (94.9%). Based on the results of seed germination, marketable fruit yield and pollen germination, H03, H04, H06, H14, H17, H22, H44, H45 were selected for heat tolerance in tropical climate.
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Recent Activities on Breeding Anthracnose Resistant Pepper at AVRDC- The World Vegetable Center
Myeong-Cheoul Cho,Patcharaporn Suwor,Shin-Wen Lin,Zong-Ming Sheu,Jaw-Fen Wang,Suchila Techawongstien,Roland Schafleitner,Paul Gniffke,Sanjeet Kumar 한국육종학회 2012 한국육종학회 심포지엄 Vol.2012 No.07
Pre- and postharvest anthracnose fruit rot is a serious disease of hot peppers (Capsicum annuum) throughout the world. AVRDC has pursued breeding for resistance to anthracnose for more than 10 years and has distributed a number of resistant lines in Asia and Africa. Recently AVRDC has identified highly aggressive isolates of Colletotrichum acutatum that have prompted renewed efforts to identify new anthracnose resistance genes. This study aimed to characterize resistance to specific pathogen strains in an array of newly identified breeding lines, and to validate one simple sequence repeat (SSR) and two sequence characterized amplified region (SCAR) markers linked to the anthracnose resistance locus. Forty-four accessions and two populations (two resistant parents and one susceptible parent, to F1, four backcross populations, and two F2 populations) are currently (Spring 2012) being screened against two pathotypes of C. acutatum collected in Taiwan. Pepper entries include C. annuum, C. baccatum, C. chinense, and their inter-specific progenies. Screening methods include field screening, spray and microinjection assays on green and red-ripe fruits, and molecular assays using SSR and SCAR markers linked to anthracnose resistance. Progress will be shared on initial screening results, evaluation of horticultural characteristics, and selection of potential lines for crossing programs.
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강석범,양은영,조명철,Takeshi Tajima,Tsung Han Lin,Shih-Wen Lin,Yen-Wei Wang,Cynthia Kung Man Yee,Derek Barchenger,Roland Schafleitner 한국국제농업개발학회 2021 韓國國際農業開發學會誌 Vol.33 No.2
본 연구는 세계채소센터의 고추 유전자원들에 대한 침수조건에서 생육특성을 조사해 침수 저항성 자원을 선발하기 위해 수행하였다. 세계채소센터 유전자원센터에서 보유중인 4종의 고추 8자원을 선발하여 유리온실에서 종자를 파종하여 2개월 간 육묘한 후 본 실험을 위해 비닐하우스로 이동 후 침수시험을 수행하였다. 시험에 이용된 고추는 고온인 여름철에 시험이 수행되어 침수에 대한 반응이 매우 빠르게 나타났다. 1. 침수 처리구에서 생육이 전체적으로 감소 되었으나 저항성 자원들은 대조구와 비교하여 초장에 있어 유의성 있는 차이를 보이지 않았다. 2. 침수 처리 후 고추자원의 엽온 조사에서는 No. 29 (9656-13) 자원을 제외한 모든 침수구에서 엽온이 대조구에 비해 높게 유지되었다. 3. 감수성 자원들은 위조지수가 1.5 이상을 나타냈으나 내침 수성 자원들은 0.5로 낮게 유지되었다. 4. SPAD 값을 조사한 결과에 있어서는 침수로 인해 전체적으로 대조구에 비해 10% 낮은 수치를 나타냈다. 5. Proline 함량에 있어서는 침수구에서 전체적으로 Proline 함량이 높게 나타났으나 내침수성이 강했던 No. 8과 22는 대조구와 유의차가 없이 낮았다. 6. 침수자원들에 대한 침수와 고온에 따른 화분활력 조사에서는 침수에서 일부 자원의 화분활력 감소를 확인하였으며, 고온처리에서 처리구 대부분의 화분 활력이 유의하게 감소하는 결과를 나타냈다. 7. 본 시험을 통해 이번 시험의 고추자원 중 Capsicum bacatum 종인 No. 8 (VI028788), No. 12 (VI044312) 자원 이 침수저항성이 강한 자원으로 판단되어 1차 선발하였다. Chili pepper (Capsicum sp.) is an important crop across tropical, subtropical, and temperate regions of Asia. There is interest in producing pepper in rice-based cropping systems, which are subjected to long periods of waterlogging conditions. The objective of our study was to characterize the response of previously reported tolerant and sensitive Capsicum accessions to waterlogging under subtropical conditions. We tested eight chili pepper accessions from four species (Capsicum annuum, C. baccatum, C. chacoense, and C. frutescens) for their response to waterlogging stress. Plants exposed to stress treatment were subjected to waterlogging in pots for 5 days from July 27, 2020 to July 31, 2020 after transplantation by placing the pots in trays filled with water up to a height of 20 cm, while control plants were normally irrigated. At five days after waterlogging, most accessions showed reduced plant width growth, while some accessions, No. 8 (VI028788) and No. 12 (VI044312) showed slight reduction compared to control plants. Leaf temperatures were significantly higher in flooded plants compared to the control plants, except in accession No. 29 (9656-13). The wilt index of waterlogging sensitive accessions was greater than 1.5, while tolerant accessions had wilt scores of less than 0.5. For all accessions, the soil plant analysis development (SPAD) value was reduced by 10% under stress compared to control plants. Proline content in flooded plants was significantly higher than that in control plants with No. 8 (VI028788) and No. 22 (PBC481) showing the smallest increase. Pollen viability in some accessions was decreased after waterlogging. However, the effect of high temperature was much greater in most accessions as expected. Based on these results, waterlogging stress accessions No. 8 (VI028788) and No. 12 (VI044312) were identified as having the potential for tolerance to waterlogging stress.
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