CAJ | 학술논문

采用常规石蜡切片法,观察油茶插穗不定根发育的解剖学特征.结果表明:油茶当年生插穗茎内无潜伏根原基,插条的皮部存在连续排列成环状的厚壁细胞,这些结构特征可能与油茶插条生根时间较长有关.不定根由诱生根原基发育形成,诱生根源于形成层、韧皮部及愈伤组织等部位,不定根属于诱导根原始体型、混合生根型.只有极少数插条的不定根由愈伤组织长出,不定根的发生与愈伤组织没有直接关系.
채용상규석사절편법,관찰유다삽수불정근발육적해부학특정.결과표명:유다당년생삽수경내무잠복근원기,삽조적피부존재련속배렬성배상적후벽세포,저사결구특정가능여유다삽조생근시간교장유관.불정근유유생근원기발육형성,유생근원우형성층、인피부급유상조직등부위,불정근속우유도근원시체형、혼합생근형.지유겁소수삽조적불정근유유상조직장출,불정근적발생여유상조직몰유직접관계.
The growth course of adventitious roots from Camellia oleifera cuttings was observed with anatomical method. The results showed as follows:there was not incubative root primordium in one-year-old shoot of C. oleifera, and there were cyclical and continuous arranging sclerenchymatous cells in periderm. These structure features might be related to the longer rootage duration of cuttings from C. oleifera. The adventitious roots developed from the induced root primodium, which originated from the cells of vascular cambium, phloem and callus. The adventitious root of C. oleifera belonged to initial type and mixed rooting type of induced root. Just only a very few adventitious roots, which had no direct relationship with callus, developed from callus.