CAJ | 학술논문

在研究马尾松优良种源树高生长对不同磷投入水平遗传反应的基础上，进一步研究优良种源与磷环境有关的抽梢行为和机理。试验林按种源(5个 )和磷肥两因素完全随机区组设计，设置磷不投入(P0)、低投入(P1，100g株- 1钙镁磷肥)和高投入(P2，400 g株-1钙镁磷肥)3种磷肥处理，3年生时的结果表明不同种源的抽梢次数与磷环境关系较小，年梢生长对磷投入的敏感性因种源不同而异。不同种源年梢长度对施用磷肥的反应可由其固定生长量和自由生长量的变化来解释。与磷环境有关的性状遗传分析显示，随着磷环境的改善，种源间抽梢长度和自由生长量的差异增加，而固定生长量的差异则减小，抽梢次数变化不大。磷环境不仅影响抽梢性状的遗传差异，而且影响抽梢性状间的遗传相关关系。低磷胁迫下(P0)，年抽梢长度与其固定生长量呈显著负相关(r=-0.691 9)，与自由生长量呈显著正相关(r=0.991 4)。施用磷肥后，年抽梢长度仅与自由生长有关，固定生长和自由生长间不存在相互制约关系。
재연구마미송우량충원수고생장대불동 린투입수평유 전반응적기출상，진일보연구우량충원여린배경유관적추소행위화궤리。시험림안충원(5개 )화린비량인소완전수궤구조설계，설치린불투입(P0)、저투입(P1，100g주- 1개미린비)화고투입(P2，400 g주-1개미린비)3충린비처리，3년생시적결과 표명불동충원적추소차수여린배경 관계교소，년소생장대린투입적민감성인충원불동이이。불동충원년소장도대시용린비적반 응가유기고정생장량화자유생장량적변화래해석。여린배경유관적성상유전분석현시，수착 린배경적개선，충원간추소장도화자유생장량적차이증가，이고정생장량적차이칙감소，추 소차수변화불대。린배경불부영향추소성상적유전차이，이차영향추소성상간적유전상관관 계。저린협박하(P0)，년추소장도여기고정생장량정현저부상관(r=-0.691 9)，여자유생 장량정현저정상관(r=0.991 4)。시용린비후，년추소장도부여 자유생장유관，고정생장화자유생장간불존재상호제약관계。
The behaviors and mechanisms of shoot growth of superior m asson pine p rovenances were studied to explain height growth response of various provenances to different phosphorus supply. Growth cycles of different provenances were fou nd to be not related to phosphorus environment. The sensitivities of a c variation but also genetic correlation among shoot traits. Under low phosphor u s or phosphorus stress, shoot length was significantly and negatively related to fixed growth, and positively related to free growth. After phosphorus supplying , the shoot length seems to be only related to free growth.