FLOWER RESEARCH JOURNAL (화훼연구)

The Korean Society for Floricultural Science (한국화훼학회)
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Selection of Primula malacoides Lines with Different Growth and Flowering Characteristics

생장이 다양한 Primula malacoides 순계 선발

  • Received : 2009.07.06
  • Accepted : 2009.08.20
  • Published : 2009.09.30

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Abstract

To obtain pure lines for breeding $F_1$ varieties of Primula malacoides, 10 lines that were considered uniform in growth and flowering characteristics were selected from self-crossings of the sixth generation ($S_6$). Plant height of the selected lines ranged from 20.8 to 33.2 cm, and number of leaves ranged from 33.6 to 54.2. The selected lines flowered at 181.4 to 207.8 days after sowing. Three lines, including 'PR-03-81', flowered in less than 190 days from sowing, while six lines, including 'PR-03-228', only flowered after more than 200 days from sowing. In terms of petal color, six lines, including 'PR-03-81', were pink, three, including 'PR-03-236', were purple, and line 'PR-03-275' was white. Flower diameter ranged from 2.4 to 2.9 cm, and number of pedicels per plant was between 15.4 and 26.4. Number of flowers per pedicel ranged from 20.2 to 30.2. Germination was more than 70%, and number of seeds per capsule (pod) ranged from 110.0 to 162.8. In summary, plant height was low and flower diameter was small and plants had many flowers and readily formed seeds. The selected lines are not only valuable as ornamental plants but could also be used as breeding materials for $F_1$ hybrids of Primula polyantha.

Primula malacoides $F_1$품종 육성을 위한 순계를 확보하기 위하여 자가 수정 또는 형매교배에 의한 채종에 의한 6세대에서 생장 및 개화특성이 균일하다고 판단되는 10개 계통을 선발하였다. 선발 계통의 초장은 20.8 cm에서 33.2 cm이었고, 엽수는 33.6개에서 54.2개이었다. 선발계통의 개화는 파종 후 181.4일에서 207.8일 사이에 되고, 190일 미만으로 꽃이 일찍 피는 계통은 'PR-03-81'등 3개이고 200일 이후에 피는 계통은 'PR-03-228'등 6개이다. 화색은 분홍색 계통은 'PR-03-81'등 6개, 보라색 계통은 'PR-03-236' 등 3개, 흰색은 'PR-03-275'이다. 화경은 2.4-2.9 cm이고, 소화경의 수는 15.4개에서 26.4개이고, 소화경당 개화수는 대부분 많아서 20.2개에서 30.2개를 나타냈다. 한편 이들 계통의 발아율은 70% 이상으로 양호한 편이고 꼬투리 당 종자수는 110.0개에서 162.8개로 많이 형성되었다. 이와 같이 Primula malacoides의 고정 계통은 초장 및 화경은 작으나 회수 및 엽수가 많고 종자 형성이 잘 되었다. 선발한 고정계통 자체만으로도 관상가치가 있지만 이들을 이용한 일대잡종의 품종이 기대된다.

Keywords

References

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