林业科学研究
林業科學研究
임업과학연구
FOREST RESEARCH
2001年
1期
67-72
,共6页
钟伟华%石斌%陈炳铨%黄章平%周宏%张民兴
鐘偉華%石斌%陳炳銓%黃章平%週宏%張民興
종위화%석빈%진병전%황장평%주굉%장민흥
火炬松%遗传资源%生长早-晚相关%合并选择%津巴布韦
火炬鬆%遺傳資源%生長早-晚相關%閤併選擇%津巴佈韋
화거송%유전자원%생장조-만상관%합병선택%진파포위
研究了由津巴布韦引入的以家系为 代表的火炬松遗传资源50个号的苗期与 幼林生长表现。结果表明,5年生的单株材积差异显著,有14个系(含3个对照)与最劣系有显 著差异,可列为优系。在30%的家系入选率下,配合选择的材积遗传增益为3.1%,入选优株1 48株;1、3年生树高与材积的早期相关为较显著或极显著,故早期试验林可测定树高为主, 以减少工作量;还比较了3种统计分析方法应用效果和选留前1/3和淘汰后1/3, 5年生时优 系的保持率和丢失率,并主张早期选择以淘汰劣系,以指导育种与生产工作为好。
研究瞭由津巴佈韋引入的以傢繫為 代錶的火炬鬆遺傳資源50箇號的苗期與 幼林生長錶現。結果錶明,5年生的單株材積差異顯著,有14箇繫(含3箇對照)與最劣繫有顯 著差異,可列為優繫。在30%的傢繫入選率下,配閤選擇的材積遺傳增益為3.1%,入選優株1 48株;1、3年生樹高與材積的早期相關為較顯著或極顯著,故早期試驗林可測定樹高為主, 以減少工作量;還比較瞭3種統計分析方法應用效果和選留前1/3和淘汰後1/3, 5年生時優 繫的保持率和丟失率,併主張早期選擇以淘汰劣繫,以指導育種與生產工作為好。
연구료유진파포위인입적이가계위 대표적화거송유전자원50개호적묘기여 유림생장표현。결과표명,5년생적단주재적차이현저,유14개계(함3개대조)여최렬계유현 저차이,가렬위우계。재30%적가계입선솔하,배합선택적재적유전증익위3.1%,입선우주1 48주;1、3년생수고여재적적조기상관위교현저혹겁현저,고조기시험림가측정수고위주, 이감소공작량;환비교료3충통계분석방법응용효과화선류전1/3화도태후1/3, 5년생시우 계적보지솔화주실솔,병주장조기선택이도태렬계,이지도육충여생산공작위호。
Genetic resource of loblolly pine (Pinus taeda ) represented by 50 fami lies were evaluated for to study the growth performance in seedling and young st age. The result showed that there was significant difference for single-tree volume at the age of 5. Fourteen families (include 3 check families) were significantly different from the most inferior one and were considered as superior families. Under the selection rate of 30% for family, the genetic gain for volume was esti mated t o be 3.1%, with combined selection and 148 selected trees. Height growth at the age of 1 and 3 was relative or extreme significantly correlated with the volume growth at the age of 5. Therefore, the test plantation could be measured only by height, in order to reduce work load, three statistical methods were compared f or their using results. Maintenance rate and loss rate of superior families at t he age of 5 were compared when selecting the top one third or superseding the bo ttom one third of all the families. It was suggested that early selection should be implemented by superseding the inferior families.