Effects of different lighting on reproductive system in depressive female rats

AIM: To investigate the effects of different lighting on the reproductive system in depressive female rats. METHODS: Healthy adult female rats were randomly chosen as control group, and the depressive adult female rats in SPF grade were randomly divided into 5 groups(7 rats each):depressive model group, sulfur lamp group, heat radiation lamp group, fluorescent lamp group and LED lamp group. After 45 d of continuous illumination, the estrous cycle was observed by the vaginal exfoliated cells, and the organ indexes of ovary and uterus were calculated. The concentrations of estiadrol(E₂), prolactin(PRL), progesterone(PROG) and testosterone(T) in the serum were detected by ELISA, and the histopathological lesion of ovary was observed under microscope with HE staining. RESULTS: The estrous cycle exhibited serious disorder, the ovaries exhibited serious congestion, and the organ indexes of ovary and uterus and the concentrations of E₂, PRL, PROG and T decreased significantly in the rats in depressive model group compared with control group(P<0.05). The estrous cycle and histopathological damage of ovary were obviously improved, and the concentrations of E₂, PRL, PROG and T were significantly increased after the sulfur lamp lighting in the depressive female rats compared with depressive model group. No obvious change and improvement of the reproductive functions in the heat radiation lamp group, fluorescent lamp group and LED lamp group was observed. CONCLUSION: The reproductive functions of depressive female rats are improved by sulfur lamp lighting.     

生长调节物质对高温下菜豆叶片水分的调节作用

在实验室控制高温条件下，分别用不同浓度的外源ＧＡ３和６－ＢＡ涂抹菜豆叶片，探讨它们对高温下菜豆叶片水分的调节作用及菜豆高温伤害状况，结果表明：在短期高温胁迫条件下，两种生长调节物质明显地提高了菜豆叶片细胞间的孔隙度，降低了高气温下植株的叶温，减缓了叶片细胞膜伤害；但是从总体上看两种调节物质处理后对叶片气体扩散阻力影响不大。     

老鼠簕的扦插繁殖

对老鼠簕扦插生根的试验结果表明．从生根率,生根数和根长度等3个指标综合考虑．用枝条下段扦插效果比用枝条上段好;不同含量的激素对老鼠簕扦插生根效果不同．其中吲哚丁酸(IBA)200mg／L诱导生根的效果最为理想．插条的生根率可达75％,且生根质量也较为理想。