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פותח על ידי קלירמאש פתרונות בע"מ -
Germination response of Orobanche seeds subjected to conditioning temperature, water potential and growth regulator treatments
Year:
2005
Source of publication :
Weed Research
Authors :
יואל, דניאל
;
.
Volume :
45
Co-Authors:
Song, W.J., Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
Zhou, W.J., Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China, Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China
Jin, Z.L., Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
Cao, D.D., Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
Joel, D.M., Department of Phytopathology and Weed Research, ARO, Newe-Ya'ar Research Center, Ramat Yishay, Israel
Takeuchi, Y., Center for Research on Wild Plants, Utsunomiya University, Utsunomiya, Japan
Yoneyama, K., Center for Research on Wild Plants, Utsunomiya University, Utsunomiya, Japan
Facilitators :
From page:
467
To page:
476
(
Total pages:
10
)
Abstract:
Broomrapes (Orobanche spp.) are parasitic weeds that cause significant losses of crop yield. Experiments were conducted to investigate the seed response to the artificial germination stimulant GR24 in three species of Orobanche subjected to preconditioning under various temperatures, water potentials and with plant growth regulators. The highest germination percentages were observed in Orobanche ramosa, Orobanche aegyptiaca and Orobanche minor seeds conditioned at 18°C for 7 days followed by germination stimulation at 18°C. With the increase of the conditioning period (7, 14, 21 and 28 days), the germination percentage of O. ramosa and O. aegyptiaca progressively decreased. When conditioned at -2 MPa, the germination percentage was lower than at 0 and -1 MPa, especially at 13 and 28°C. Orobanche minor seeds could retain relatively high germination if conditioned at 18, 23 or 28°C, even after significantly extended conditioning periods (up to 84 days). GA3 (30-100 mg L-1), norflurazon and fluridone (10-100 mg L-1), and brassinolide (0.5-1.0 mg L-1) increased seed germination, while 0.01 mg L-1 uniconazole significantly reduced germination rates of all three Orobanche spp. The promotional effects of GA3 and norflurazon and the inhibitory effect of uniconazole were evident, even when they were treated for 3 days. Germination of Orobanche seeds was much lower when the unconditioned seeds were directly exposed to GR24 at 10-6 m. This early GR 24-induced inhibition was however alleviated or even eliminated by the inclusion of GA3 or norflurazon (10-50 mg L-1) in the conditioning medium. On the contrary, the inclusion of uniconazole increased the inhibitory effect of GR24, particularly in the case of O. ramosa. © 2005 European Weed Research Society.
Note:
Related Files :
crop yield
germination
Orobanche
Phelipanche ramosa
temperature effect
water availability
Weed
עוד תגיות
תוכן קשור
More details
DOI :
10.1111/j.1365-3180.2005.00477.x
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
22478
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:52
Scientific Publication
Germination response of Orobanche seeds subjected to conditioning temperature, water potential and growth regulator treatments
45
Song, W.J., Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
Zhou, W.J., Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China, Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China
Jin, Z.L., Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
Cao, D.D., Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
Joel, D.M., Department of Phytopathology and Weed Research, ARO, Newe-Ya'ar Research Center, Ramat Yishay, Israel
Takeuchi, Y., Center for Research on Wild Plants, Utsunomiya University, Utsunomiya, Japan
Yoneyama, K., Center for Research on Wild Plants, Utsunomiya University, Utsunomiya, Japan
Germination response of Orobanche seeds subjected to conditioning temperature, water potential and growth regulator treatments
Broomrapes (Orobanche spp.) are parasitic weeds that cause significant losses of crop yield. Experiments were conducted to investigate the seed response to the artificial germination stimulant GR24 in three species of Orobanche subjected to preconditioning under various temperatures, water potentials and with plant growth regulators. The highest germination percentages were observed in Orobanche ramosa, Orobanche aegyptiaca and Orobanche minor seeds conditioned at 18°C for 7 days followed by germination stimulation at 18°C. With the increase of the conditioning period (7, 14, 21 and 28 days), the germination percentage of O. ramosa and O. aegyptiaca progressively decreased. When conditioned at -2 MPa, the germination percentage was lower than at 0 and -1 MPa, especially at 13 and 28°C. Orobanche minor seeds could retain relatively high germination if conditioned at 18, 23 or 28°C, even after significantly extended conditioning periods (up to 84 days). GA3 (30-100 mg L-1), norflurazon and fluridone (10-100 mg L-1), and brassinolide (0.5-1.0 mg L-1) increased seed germination, while 0.01 mg L-1 uniconazole significantly reduced germination rates of all three Orobanche spp. The promotional effects of GA3 and norflurazon and the inhibitory effect of uniconazole were evident, even when they were treated for 3 days. Germination of Orobanche seeds was much lower when the unconditioned seeds were directly exposed to GR24 at 10-6 m. This early GR 24-induced inhibition was however alleviated or even eliminated by the inclusion of GA3 or norflurazon (10-50 mg L-1) in the conditioning medium. On the contrary, the inclusion of uniconazole increased the inhibitory effect of GR24, particularly in the case of O. ramosa. © 2005 European Weed Research Society.
Scientific Publication
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