Germination and cryopreservation of several cactus species from NE Brazil

被引：13

作者：

Veiga-Barbosa, L. ^{[2
]}

Gonzalez-Benito, M. E. ^{[1
]}

Assis, J. G. A. ^{[2
]}

Perez-Garcia, F. ^{[1
]}

机构：

[1] Univ Politecn Madrid, Dept Biol Vegetal, Escuela Univ Ingn Tecn Agr, E-28040 Madrid, Spain

[2] Univ Fed Bahia, Dept Biol Geral, BR-40170290 Salvador, BA, Brazil

来源：

SEED SCIENCE AND TECHNOLOGY | 2010年 / 38卷 / 01期

关键词：

SEED CRYOPRESERVATION; LIGHT; TEMPERATURE; DESICCATION; TOLERANCE; CACTACEAE;

D O I：

10.15258/sst.2010.38.1.22

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Seed germination of Cereus jamacaru, Discocactus zenthneri, Microchanthus flaviflorus and Pilosocereus gounelli was studied under different temperature and light regimes. Discocactus zenthneri seeds germinated at very low percentages (<5%) in all conditions studied; the positive results of the tetrazolium test suggested a very deep dormancy. The other three species had high germination percentages when incubated at 20-30 degrees C. and also at alternating temperatures of 25/15 degrees C, under photoperiod conditions (maximum percentages obtained 96-100%). Incubation in darkness prevented germination (percentages 0-1%). However, when seeds were subsequently transferred to photoperiod incubation. germination was promoted (90-99%). Seed cryopreservation did not affect the germination of the species studied (Cerens jamacaru. Discocactus zenthneri. Melocactus albicephalus, M. concinnus, M. paucispinus, Micranthocereus flaviflorus and Pilosocereus gounelli).

引用

页码：218 / 224

页数：7

共 24 条

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