[Objective] This study was to explore the growth characteristics and fruit quality of a new bud mutant line, ＇Chuanzao Loquat＇. [Method] Paraffin section technique combined with field investigation method were adopted to conduct com- parative analysis of shoot histomorphology and phenological phases between two Io- quat varieties, ＇Chuanzao Loquat＇ and ＇Zaozhong 6＇. [Result] ＇Chuanzao Loquat＇ branched out and unfolded leaves about half to a month earlier than ＇Zaozhong 6＇; both the flowering and fruiting phases of ＇Chuanzao Loquat＇ were three months earlier than a precocious variety, ＇Zaozhong 6＇; the proportions of epidermis, cortex parenchyma, vascular tissue and medulla were 3.7%, 14.5%, 15.9% and 65.9%, re- spectively, in spdng shoots of ＇Chuanzao Loquat＇, and 3.1%, 42.5%, 6.9% and 47.5%, respectively, in ＇Zaozhong 6＇. [Conclusion] In terms of phenological phases, ＇Chuanzao Loqua＇ is earlier than ＇Zaozhong 6＇, a currently widely planted precocious variety, and thus is an important germplasm resource of Ioquats.
以野生金叶过路黄的老枝、嫩枝为插穗,探讨了0、10、50、100 mg/L IBA 4种浓度对金叶过路黄水插生根及株高增长量等指标的影响。结果表明:(1)老枝插穗的生根率、生根数量、株高增长量等生长指标均高于嫩枝,老枝插穗的水插效果优于嫩枝。(2)3种浓度IBA处理老枝的生根率、根数均极显著高于未处理老枝,而根长和侧根数差异不显著。(3)3种浓度IBA处理嫩枝的生根率、根数、根系发育指数和株高增长量均显著高于未处理嫩枝。(4)以50 mg/LIBA处理老枝的生根效果最好,生根率达100%,根系发育指数为1.73,显著高于其他处理。
