온도 및 생장조절제가 국내 육성 사과 품종의 화분발아율 및 화분관 신장에 미치는 영향

국문 초록 (Abstract)

본 시험은 만개기 기온(15~40oC) 및 생장조절제(GA4+7+BA와 prohexadione-calcium) 살포가 국내 주요 사과품종(‘후지’, ‘쓰가루’)과 국내에서 육성한 품종들(‘추광’, ‘감홍’, ‘홍안’, ‘홍금’, ‘홍로’, ‘홍소’, ‘화홍’, ‘섬머드림’, ‘선홍’)의 화분 발아율 및 화분관 신장에 미치는 영향을 조사하고자 실시하였다. 15℃부터 25℃까지 온도가 올라갈수록 화분 발아율과 화분관 신장 길이는 증가되었으나, 30℃ 이상의 고온은 화분 발아율과 화분관 신장 길이를 억제시켰다. 30oC 이상의 고온에서 화분 발아율과 화분관 신장 길이가 가장 높았던 국내 육성 사과품종은 ‘선홍’이었다. GA4+7+BA 살포는 무처리구에 비해 화분 발아율 및 화분관 신장 길이를 증진시켰으나, 이러한 효과는 40℃에서 발생하지 않았다. prohexadione-calcium 살포는 화분 발아율과 화분관 신장 길이에 영향을 주지 않았다. 결론적으로, 사과나무 만개기 기온이 30~35℃ 정도로 높아지면, 인공수분 후 GA4+7+BA를 살포하는 것이 착과 증진에 좋을 것으로 판단되었다.

다국어 초록 (Multilingual Abstract)

This study was carried out to investigate the effect of temperature (15~40℃) and the spraying plant growth regulators (GA4+7+BA and prohexadione-calcium) during full blooming on pollen germination and pollen tube growth of the commercial apple cultivars (‘Fuji’ and ‘Tsugaru’) and apple cultivars bred in Korea (‘Chukwang’, ‘Gamhong’, ‘Hongan’, ‘Honggeum’, ‘Hongro’, ‘Hwahong’, ‘Hongso’, ‘Summer dream’ and ‘Sunhong’). Pollen germination and pollen tube growth were increased with increasing temperature from 15 to 25℃, but high temperature over 30℃ inhibit those. The apple cultivar bred in Korea that shows the highest value on pollen germination and pollen tube growth at over 30℃ was ‘Sunhong’. The spraying GA4+7+BA increased pollen germination and pollen tube growth than control, but that effect was not show at 40℃. The spraying prohexadione-calcium was not affect to pollen germination and pollen tube growth. In conclusion, if the air temperature during full bloom of apple tree rises about 30~35℃, the spraying GA4+7+BA after artificial pollination will be good to increasing fruit set.

목차 (Table of Contents)

• Abstract
• 서론
• 재료 및 방법
• 결과 및 고찰
• 적요
• Literature Cited

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