Effects of Strawberry Stock Propagation Seasons and Methods on Runner Plant Production
Date Issued
2009
Date
2009
Author(s)
Kuo, Huai-En
Abstract
In order to find the suitable seasons and methods to propagate strawberry runner plant as next year’s nursery stock plants, ‘Tayouan No.3’ strawberry stock plants were planted at early August, and stock plantlets were propagated from Sep. to late Feb. from layering and cutting method. The stock plantlets propagation seasons were divided as early (Sep. to mid-Oct.), mid-term (mid-Oct. to Nov.), and late (Dec. to next Feb.). Mean survival stock plantlets per stock plant from layering method was higher at early with 0.93 plant and mid-term with 0.70 plant, and lower at late with 0.25 plant; as cutting method, it was higher at mid-term with 1.25 plants, next at late with 0.45 plant, and lower at early with 0.25 plant. Stock plantlets survival rate was higher from layering method in all season (early 90%, mid-term 96%, and late 100%) but from cutting method with lower at early (53%), medium at mid-term (74%), and higher at late (91%). Stock plantlets was higher from cutting method had higher plant height and crown height. No matter to method, stock plantlets at mid-term had the most leaves. Stock plantlets propagated from cutting method had larger crown size at early and significantly got smaller at mid-term and late. However, there was no significant difference among all season from layering method, but the crown size was gradually larger since early through late. Numbers of inflorescences removed was more at early and mid-term, less at late. Crown height and number of leaves were the better index to predicted stock plantlets weight by regression analysis. Propagation method had less effect on flowering time of cultivated plants, but those stock plantlets propagated from cutting method had more runners, inflorescences, total survival stock plantlets, and more small flowers on the inflorescence. Runners and total propagated runner plants generated by stock plants were non-significant among all seasons and methods, however, survival runner plants from stock plants by layering were more at early with 36.1 plants (86.0 plants /m2), next at mid-term with 27.3 plants (65.0 plants /m2), and less at late with 25.8 plants (61.4 plants / m2); stock plants by cutting method had the same tendency, more at early with 38.1 plants (90.7 plants /m2), next at mid-term with 32.3 plants (76.9 plants /m2), last at late with 27.4 plants (65.2 plants /m2). Commercial standard runner plants also had the same trend with more at early season and less at late season. Runner plants from stock plants with cutting had more leaves than by layering, but crown height and crown size were non-significant among stock plants from different methods and seasons. Plant height and the petiole of 4th expanded leaf of stock plantlets before planting would be the better index to predict the stock plants appearances in nursery by regression analysis. It was suggested to propagate stock plantlets as next year’s nursery stock plant by using cutting method at early, not only for less effect on flowering of cultivated plants and more runners for propagation, but also for more survival runner plants and commercial standard runner plants after planting at nursery.
Subjects
cutting
layering
nursery
high
temperature
frequency
chilling unit
Type
thesis
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