杉木不同世代不同类型种子园遗传改良增益研究

doi:10.11707/j.1001-7488.20070304

林业科学 ›› 2007, Vol. 43 ›› Issue (03): 20-27.doi: 10.11707/j.1001-7488.20070304

杉木不同世代不同类型种子园遗传改良增益研究

郑勇平¹ 孙鸿有² 董汝湘³ 华朝晖⁴ 唐淑琴⁵ 张建章⁶ 傅顺华²

1.浙江森禾种业股份有限公司,杭州310012；2.浙江林学院林业与生物技术学院,临安311300；3.浙江省林业种苗管理总站,杭州310020；4.浙江遂昌县林业局,遂昌323300；5.浙江淳安县姥山林场,淳安311700；6.浙江龙泉市林业局,龙泉323700

收稿日期:2006-02-15 修回日期:1900-01-01 出版日期:2007-03-25 发布日期:2007-03-25

A Study on Realized and Genetic Gains of Different Generations and Types in Seed Orchards of Chinese Fir (Cunninghamia lanceolata)

Zheng Yongping¹,Sun Hongyou²,Dong Ruxiang³,Hua Zhaohui⁴,Tang Shuqin⁵,Zhang Jianzhang⁶,Fu Shunhua²

1. Zhejiang Senhe Seed Company, Limited Hangzhou 310012; 2. School of Forestry and Biotechnology, Zhejiang Forestry College Lin'an 311300; 3. Forestry Seed and Stock Controlling Station of Zhejiang Province Hangzhou 310020; 4. Forestry Bureau of Suichang County Suichang 323300; 5. Laoshan Forest Farm of Chun'an County Chun'an 311700; 6. Forestry Bureau of Longquan County Longquan 323700

Received:2006-02-15 Revised:1900-01-01 Online:2007-03-25 Published:2007-03-25

摘要/Abstract

摘要：

以浙江省17个无性系种子园为研究对象,连续2年采种育苗造林,进行2次4地点5区组的种子园子代测定试验,测定树高、胸径、材积、冠幅、侧枝等8个性状。结果表明从未经遗传改良普通林分种子到1代、1.5代、2代种子园,子代生长增益是逐代增长的,但世代之间增幅明显下降。优良双系种子园子代生长增益最大,优良种源种子园次之。1代、1.5代和2代种子园,种源种子园,双系种子园的子代生长,在6年生时,树高生长现实增益分别为4.35%、6.04%、7.88%、12.02%和12.02%,遗传增益依次为3.90%、5.41%、7.06%、10.77%和10.77%;胸径现实增益为7.60%、9.68%、12.08%、15.05%和19.70%,遗传增益为7.07%、9.00%、11.23%、14.00%和18.32%;材积现实增益为20.65%、27.47%、32.14%、39.93%和46.14%,遗传增益为16.97%、22.58%、26.42%、32.82%和37.93%。为持续获得高增长的遗传改良效果,在高世代种子园建设中,应充分发掘和优先利用优良种源的优质种质资源;在提升育种群体遗传水平,保持遗传基础多样性的同时,建立双系种子园,实现工业原料林用种的品种化,应是今后的一个重要发展方向。

关键词: 杉木, 种子园, 现实增益, 遗传增益, 子代测验

Abstract:

To fully understand the progress and trend of genetic improvement of Chinese Fir (Cunninghamia lanceolata) in seed orchards of different generations and types, and thus search for sustainable and efficient approaches for improving the genetic level of populations in trees, we collected seeds, grew and planted seedlings for two consecutive years in 17 clonal seed orchards in Zhejiang Province. Data on tree height, breast diameter, volume, crown diameter and lateral branch were measured twice in seed orchards of four different locations and five groups. The results showed that the average growth gain of progeny gradually improved from generation to next generation, I.e., from general unimproved seeds to seeds from orchards of the first, one and half, and second generations, however, the growth gain between different generations decreased significantly. The seeds from bi-clonal seed orchards showed the greatest growth gain, followed by those from provenance orchards. At six-year-old, compared with general unimproved seeds, the seeds from the first, one and half, and second generation orchards, provenance orchards and bi-clonal seed orchard showed height gain of 4.35%, 6.04%, 7.88%, 12.02% and 12.02%, representing genetic gain of 3.90%, 5.41%, 7.06%, 10.77% and 10.77%, respectively; breast diameter gain of 7.60%, 9.68%, 12.08%, 15.05% and 19.70%, representing genetic gain of 7.07%, 9.00%, 11.23%, 14.00% and 18.32%, respectively; and volume gain of 20.65%, 27.47%, 32.14%, 39.93% and 46.14%, representing genetic gain of 16.97%, 22.58%, 26.42%,32.82% and 37.93%, respectively. Based on these results, we suggest that the seed resources of fine provenances should be utilized to the fullest in advanced orchards in order to achieve sustainable genetic gain. We further suggest that it should be very important to build bi-clonal orchard for trees used for industrial materials while improving the genetic level of populations and maintaining genetic diversity.

Key words: Chinese Fir(Cunninghamia lanceolata), seed orchard, realized gain, genetic gain, progeny testing

郑勇平孙鸿有董汝湘华朝晖唐淑琴张建章傅顺华. 杉木不同世代不同类型种子园遗传改良增益研究[J]. 林业科学, 2007, 43(03): 20-27.

Zheng Yongping;Sun Hongyou;Dong Ruxiang;Hua Zhaohui;Tang Shuqin;Zhang Jianzhang;Fu Shunhua. A Study on Realized and Genetic Gains of Different Generations and Types in Seed Orchards of Chinese Fir (Cunninghamia lanceolata)[J]. Scientia Silvae Sinicae, 2007, 43(03): 20-27.

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杉木不同世代不同类型种子园遗传改良增益研究

A Study on Realized and Genetic Gains of Different Generations and Types in Seed Orchards of Chinese Fir (Cunninghamia lanceolata)

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