秦岭十四种藓类植物的染色体观察

本文以藓类植物的幼嫩孢蒴为材料，对秦岭地区14种藓类植物的染色体作了观察，并对其中的长尖提灯藓进行了核型分析。结果如下：细叶真藓Bryum capillare L.ex Hedw．n＝10；长尖提灯藓Mnium lycopodioides Schwaegr．n＝6，核型公式为n＝6＝3m+3sm(1SAT)侧枝匍灯藓Plagiomnium maximoviczii(Lindb．)T．Kop．n＝6；梨蒴珠藓皱叶变种Bartramia pomiformis var．elongata Turn. n=10+2m；细枝羽藓Thuidium delicatulum (Hedw.) Mitt. n=11；尖叶羽藓Thuidium philibortii Limpr. n=10+1m；褐黄水灰藓Hygrohypnum ochraceum (Wils.) Loesk. n=10；钩枝镰刀藓Drepanocladus uncinatus (Hedw.) Warnst. n=7+3m； 黄叶细湿藓Campylium chrysophyllum (Brid.) J. Lange. n=10；林地青藓Brachythecium starkei (Brid.) B. S. G. n=16；多褶青藓 Brachythecium buchananii (Hook.) Jaeg. n=6；扁枝小锦藓Brotherella yokohamae (Broth.) Broth. n=9+2m； 粗枝藓Gollania neckerella (C. Mull.) Broth. n=7； 暖地金发藓, Pogonatum fastigiatum Mitt. n=7；其中粗枝藓和扁枝小锦藓的染色体数尚未见报道；林地青藓和多褶青藓的染色体数与所见报道的结果不同：其余10种与前人报道的结果一致。

OBSERVATIONS ON CHROMOSOMES OF FOURTEEN MOSS SPECIES FROM THE QINLING RANGE,CHINA

The chromosome numbers in fourteen moss species from the Qinling Range, and karyotype of Mnium lycopodioides are reported in this paper. Immature capsules were used as material. Bryum capillare L. ex Hedw was found, to have n=10; Mnium lycopodioides Schwaegr. n = 6 with the karyotype formula n = 6 = 3m 3sm (1SAT) ; Plagiomnium maxi-moviczii (Lindl. ) T. Kop. n = 6; Bartrarnia halleriana var. elongata Turn. n=10 2m; Thuidium delicatulum (Hedw. ) Mitt. ri=ll; Thuidium philibertii Limpr. n=10 m; Hy-grohypnum ochraceum (Wils. ) Loesk. n=10; Drepanocladus uncinatus (Hedw. ) Warnst. n = 7 3m; Campylium chrysophyllus (Brid. ) J. Lange. n = 10; Brachythecium starkei (Brid. ) B. S. G. n==6; Brachythecium buchananii (Hook. ) Jaeg. n = 6; Brotherella yokohamae (Broth. ) Broth. n=9 2m; Gollarnia neckerella (C. Mull. ) Broth. n=7; Poganatum Jastigiatum Mitt. n = 7. No report on the chromosome number of Brotherella yokohamae and Gollania neckerella has been found. The chromosome numbers in Brachythecium starkei and Brachythecium buchananii (Hook. ) Jaeg. are different from previous reports, while the others are in accordance with the previous reports.