查詢結果分析
來源資料
頁籤選單縮合
題名 | 出雲山臺灣杉嫁接營養系種子園之生長與結實=Characterization of Growth, Cone Production, and Seed Yield in a Taiwania cryptomerioides Clonal Seed Orchard in Tsuyunshan, Taiwan |
---|---|
作者姓名(中文) | 鍾振德; 郭幸榮; | 書刊名 | 臺灣林業科學 |
卷期 | 19:4 2004.12[民93.12] |
頁次 | 頁275-286 |
分類號 | 436.252 |
關鍵詞 | 臺灣杉; 種子園; 營養生長; 開花; 生殖障礙; Taiwania cryptomerioides; Clonal orchards; Vegetative growth; Flowering; Reproductive incompetence; |
語文 | 中文(Chinese) |
中文摘要 | 出雲山台灣杉種子園在1981年以關山、觀霧、大雪山及大甲事業區等4個種源,35株林木接穗所建造之嫁接營養系種子園,在1999年建園18 yr後才開始結實。本文於2001年起連續三年調查開花結實及兩年的生長資料,並利用人工輔助授粉,推測空粒種子的原因。園內各營養系間的高生長與胸徑大小呈極顯著差異(p < 0.001),種源間的差異亦極顯著,其中大雪山種源最佳,關山種源最劣。調查營養系間結實與飽滿種子發現,2001年有31個營養系38%植株結實,但沒有任何飽滿種子;2002年有25個營養系20.4%植株結實,僅no. 31平均每粒毬果具0.01個飽滿種子;2003年,有28個營養系32.9%植株結實,結實植株有43.6%具飽滿種子,平均每粒毬果0.01∼粒飽滿種子,具飽滿種子之毬果中有83.9%種子發芽率100%。經由人工輔助授粉方式致使毬果具飽滿種子比率提高至80%,推測種子園可能是未授粉而影響結實率。 |
英文摘要 | Thirty-five Taiwania cryptomerioides Hay. clones in a Tsuyunshan seed orchard established in 1981 in the central part of Taiwan were observed for production of cones in 1999, 18 yr after field planting. Clones were divided into 4 populations and analyzed for 3 yr for growth and production of cones and filled seeds. Most variations (p < 0.001) in height and diameter at breast height (dbh) per graft were due to differences between populations and between clones within a population. The best population for height and dbh growth was from Tasheueshan and the worst population was from Guanshan. Most variations in the numbers of cones per graft and filled seeds per cone were due to differences between clones. In 2001, 20 yr after field planting, 31 clones and 38% of grafts had cone production, but they produced no filled seeds. In 2002, 25 clones and 20.4% of grafts produced cones, but only clone no. 31 had filled seeds , and the average number of filled seeds per cone was 0.01. In 2003, 28 clones and 32.9% of grafts had cone production, 43.6% of these grafts with filled with seeds, and the average number of filled seeds per cone ranged from 0.01 to 1.7. Germination rates of filled seeds per cone varied from 0 to 100%, but 83.9% of them were 100%. Artificially increasing pollen supply ( by supplemental mass pollination (SMP)) was directly applied to receptive seed cones to increase seed yields. The success rates was 80%. The results indicated that the major loss of seeds resulted from insufficient pollen in the ovules. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。