EFFECTS OF TEMPERATURE, STRATIFICATION, SCARIFICATION, AND SEED ORIGIN ON THE GERMINATION OF SCIRPUS-ACUTUS MUHL SEEDS FOR USE IN CONSTRUCTED WETLANDS

被引：10

作者：

THULLEN, JS

EBERTS, DR

机构：

[1] National Biological Service, Denver, 80225-0007, Colorado

[2] Bureau of Reclamation, Denver, 80225-0007, Colorado

来源：

WETLANDS | 1995年 / 15卷 / 03期

关键词：

SEED GERMINATION; SCIRPUS ACUTUS; HARDSTEM BULRUSH; COLD STRATIFICATION; CONSTRUCTED WETLANDS; MARSHES;

D O I：

10.1007/BF03160710

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Procedures to maximize seed germination of Scirpus acutus (hardstem bulrush) from two geographic locations were studied in the laboratory. Pregermination conditions included scarification and stratification at 4 +/- 1 degrees C for 0, 2, 4, 8, or 12 weeks while submerged in water. Following the treatments, seeds were placed in night/day temperature regimes of 10/25 degrees C or 18/22 degrees C under a 14-hour photoperiod (approximate to 200 mu mol m(-2) s(-1) PPFD). A stratification period of at least 2 weeks significantly enhanced germination. Germination was significantly greater at 10/25 degrees C than at 18/22 degrees C. Maximum germination percentages of 97.5 and 92.5 were achieved for seed lots exposed to a 10/25 degrees C temperature regime following a 12-week cold period. Germination percentages of seeds from the two geographic locations did not differ significantly (P < 0.05).

引用

页码：298 / 304

页数：7

共 27 条

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