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Factors Affecting Buffalobur (Solanum rostratum) Seed Germination and Seedling Emergence

Published online by Cambridge University Press:  20 January 2017

Shouhui Wei ,
Chaoxian Zhang ,
Xiangju Li ,
Hailan Cui ,
Hongjuan Huang ,
Biaofeng Sui ,
Qinghui Meng  and
Hongjun Zhang
Shouhui Wei
Affiliation:
Institute of Plant Protection (IPP), Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Weed and Rodent Biology and Management, CAAS, No. 2 West Yuanmingyuan Road, Haidian, Beijing 100193, China
Chaoxian Zhang*
Affiliation:
Institute of Plant Protection (IPP), Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Weed and Rodent Biology and Management, CAAS, No. 2 West Yuanmingyuan Road, Haidian, Beijing 100193, China
Xiangju Li
Affiliation:
Institute of Plant Protection (IPP), Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Weed and Rodent Biology and Management, CAAS, No. 2 West Yuanmingyuan Road, Haidian, Beijing 100193, China
Hailan Cui
Affiliation:
Institute of Plant Protection (IPP), Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Weed and Rodent Biology and Management, CAAS, No. 2 West Yuanmingyuan Road, Haidian, Beijing 100193, China
Hongjuan Huang
Affiliation:
Institute of Plant Protection (IPP), Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Weed and Rodent Biology and Management, CAAS, No. 2 West Yuanmingyuan Road, Haidian, Beijing 100193, China
Biaofeng Sui
Affiliation:
Institute of Plant Protection (IPP), Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Weed and Rodent Biology and Management, CAAS, No. 2 West Yuanmingyuan Road, Haidian, Beijing 100193, China
Qinghui Meng
Affiliation:
Institute of Plant Protection (IPP), Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Weed and Rodent Biology and Management, CAAS, No. 2 West Yuanmingyuan Road, Haidian, Beijing 100193, China
Hongjun Zhang
Affiliation:
Institute for the Control of Agrochemicals, Ministry of Agriculture, China, No. 22 Maizidian Street, Chaoyang, Beijing 100125, China
*
Corresponding author's E-mail: [email protected]
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Abstract

Buffalobur is a noxious and invasive weed species native to North America. The influence of environmental factors on seed germination and seedling emergence of buffalobur were evaluated in laboratory and greenhouse experiments. The germination of buffalobur seeds occurred at temperatures ranging from 12.5 to 45 C, with optimum germination attained between 25 and 35 C. Buffalobur seeds germinated equally well under both a 14-h photoperiod and continuous darkness; however, prolonged light exposure (≥ 16 h) significantly inhibited the seed germination. Buffalobur seed is rather tolerant to low water potential and high salt stress, as germination was 28 and 52% at osmotic potentials of −1.1 MPa and salinity level of 160 mM, respectively. Medium pH has no significant effect on seed germination; germination was greater than 95% over a broad pH range from 3 to 10. Seedling emergence was higher (85%) for seeds buried at a soil depth of 2 cm than for those placed on the soil surface (32%), but no seedlings emerged when burial depth reached 8 cm. Knowledge of germination biology of buffalobur obtained in this study will be useful in predicting the potential distribution area and developing effective management strategies for this species.

Keywords

Buffalobur, Solanum rostratum Dunal SOLCU.TemperaturelightpHosmotic potentialsalt stressburial depth
Type
Weed Biology and Ecology
Information
Weed Science , Volume 57 , Issue 5 , October 2009 , pp. 521 - 525
Copyright
Copyright © Weed Science Society of America 

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