Germination Strategies and Patterns of Annual Species in the Temperate Semiarid Region of China

Comparison of Seed Germination ofAgriophyllum squarrosum(L.) Moq. andArtemisia halodendronTurcz. Ex Bess, Two Dominant Species of Horqin Desert, China

“…Although it is often regarded as the germinability of plant seeds in a growing season and is linked with the predictability of environmental factors (McWilliams et al, Two Dominant Species of Horqin Desert, China 173 1968;Hacker, 1984;Gutterman and Edine, 1988), the total germination percentage is in fact a potential that a plant can reach only under adequate conditions, which are seldom available in the field. The high final percentage of germination in Agriophyllum squarrosum in our study was similar to that of the same species reported by Wang et al (1998) and Zheng et al (2004) but different from that by Li et al (2006). In Wang et al's study, 100% of the viable seeds germinated at a temperature of 15=28 C under darkness and more than 90% of seeds ultimately germinated under similar experimental conditions in Zheng et al's study.…”

“…Interests on the germination characteristics of Agriophyllum squarrosum has increased in recent years. Previous studies shows that in Agriophyllum squarrosum no seed innate dormancy existed (Wang et al, 1998;Li et al, 2006), light has negative effects on the germination (Zheng et al, 2003(Zheng et al, , 2004Tobe et al, 1999Tobe et al, , 2005, alternating temperature is needed to ensure a good germination (Tobe et al, 2005), seeds collected from 0-10-cm soil germinate better than those form deeper soil (Bai et al, 2004), and germination percentage drops rapidly when water potential reaches À0.5 MPa (Tobe et al, 2005). Attention on Artemisia halodendron has also risen (Li et al, 2005a(Li et al, , 2005bSu et al, 2005;Wang and Zhou, 1999;Zhou, 1999), but information on its germination is very limited.…”

SOIL SEED BANK CHARACTERISTICS BENEATH AN AGE SEQUENCE OF CARAGANA MICROPHYLLA SHRUBS IN THE HORQIN SANDY LAND REGION OF NORTHEASTERN CHINA

“…Previously, the authors have studied the seed germination characteristics of 12 annual species which appeared in the soil seed bank (Li et al ., ). For five species that are the main contributors to the soil seed bank, S. viridis , E. pilosa , Ch.…”

Glyphosate Resistance of Chloris virgata Weed in Australia and Glyphosate Mobility Are Connected Problems

“…As Chloris virgata can tolerate high-salinity and high-alkalinity soil environments, Chloris virgata can form a dominant community in these environments [61,62]. Chloris virgata is tolerant to drought stress [63]. Many studies on Chloris virgata seed biology have been completed in China, India, Qatar, and Honduras [63], while very few studies have been conducted in Australia [64,65].…”