Spider Plant (<i>Cleome gynandra</i> L.): An Emerging Weed in the Sweet Corn–Brassica Cropping System
Spider plant (<i>Cleome gynandra</i> L.) is an emerging noxious weed, affecting cultivated vegetables in Queensland, Australia. It is a prolific seed producer, forming large seedbanks with variable seedling emergence. A study was carried out to investigate the seed biology of spider plan...
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| Format: | Article |
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MDPI AG
2023-05-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/13/5/1430 |
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| author | Khaled Saifullah Alwyn Williams Steve Adkins |
| author_facet | Khaled Saifullah Alwyn Williams Steve Adkins |
| author_sort | Khaled Saifullah |
| collection | DOAJ |
| description | Spider plant (<i>Cleome gynandra</i> L.) is an emerging noxious weed, affecting cultivated vegetables in Queensland, Australia. It is a prolific seed producer, forming large seedbanks with variable seedling emergence. A study was carried out to investigate the seed biology of spider plant, focusing on its seed germination ecology, viz., influence of temperatures, illumination conditions, medium salinity, pH, substrate moisture, burial depth, and after-ripening. Freshly harvested seeds were negatively photoblastic and had combinational dormancy. Improved germination was obtained by physical scarification followed by soaking for 16 h, by dry storage for over 6 months, and by the imbibition of gibberellic acid. Maximum germination percentages of 70 to 80% were recorded under constant darkness at alternating day/night temperatures of 20/30 °C, or with 18 to 27 °C constant temperatures. Spider plant showed a broad tolerance to pH but only moderate salt and moisture stress tolerance, since only 42 and 26% germination were observed with 60 mM NaCl and at −0.40 MPa, respectively. Seeds placed on the soil surface did not germinate, however, at a burial depth of 1.0 to 1.5 cm, which resulted in <i>ca.</i> 80% seedling emergence. These findings will assist land managers to predict seasonal emergence and will aid in deploying management approaches to control this weed. |
| first_indexed | 2024-03-11T04:00:41Z |
| format | Article |
| id | doaj.art-778ae13567474c0387af2ce4632a8a8c |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-11T04:00:41Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-778ae13567474c0387af2ce4632a8a8c2023-11-18T00:08:15ZengMDPI AGAgronomy2073-43952023-05-01135143010.3390/agronomy13051430Spider Plant (<i>Cleome gynandra</i> L.): An Emerging Weed in the Sweet Corn–Brassica Cropping SystemKhaled Saifullah0Alwyn Williams1Steve Adkins2School of Agriculture and Food Sciences, The University of Queensland, Gatton, QLD 4343, AustraliaSchool of Agriculture and Food Sciences, The University of Queensland, Gatton, QLD 4343, AustraliaSchool of Agriculture and Food Sciences, The University of Queensland, Gatton, QLD 4343, AustraliaSpider plant (<i>Cleome gynandra</i> L.) is an emerging noxious weed, affecting cultivated vegetables in Queensland, Australia. It is a prolific seed producer, forming large seedbanks with variable seedling emergence. A study was carried out to investigate the seed biology of spider plant, focusing on its seed germination ecology, viz., influence of temperatures, illumination conditions, medium salinity, pH, substrate moisture, burial depth, and after-ripening. Freshly harvested seeds were negatively photoblastic and had combinational dormancy. Improved germination was obtained by physical scarification followed by soaking for 16 h, by dry storage for over 6 months, and by the imbibition of gibberellic acid. Maximum germination percentages of 70 to 80% were recorded under constant darkness at alternating day/night temperatures of 20/30 °C, or with 18 to 27 °C constant temperatures. Spider plant showed a broad tolerance to pH but only moderate salt and moisture stress tolerance, since only 42 and 26% germination were observed with 60 mM NaCl and at −0.40 MPa, respectively. Seeds placed on the soil surface did not germinate, however, at a burial depth of 1.0 to 1.5 cm, which resulted in <i>ca.</i> 80% seedling emergence. These findings will assist land managers to predict seasonal emergence and will aid in deploying management approaches to control this weed.https://www.mdpi.com/2073-4395/13/5/1430<i>Cleome gynandra</i> L.vegetabledormancygerminationnegatively photoblasticgibberellic acid |
| spellingShingle | Khaled Saifullah Alwyn Williams Steve Adkins Spider Plant (<i>Cleome gynandra</i> L.): An Emerging Weed in the Sweet Corn–Brassica Cropping System Agronomy <i>Cleome gynandra</i> L. vegetable dormancy germination negatively photoblastic gibberellic acid |
| title | Spider Plant (<i>Cleome gynandra</i> L.): An Emerging Weed in the Sweet Corn–Brassica Cropping System |
| title_full | Spider Plant (<i>Cleome gynandra</i> L.): An Emerging Weed in the Sweet Corn–Brassica Cropping System |
| title_fullStr | Spider Plant (<i>Cleome gynandra</i> L.): An Emerging Weed in the Sweet Corn–Brassica Cropping System |
| title_full_unstemmed | Spider Plant (<i>Cleome gynandra</i> L.): An Emerging Weed in the Sweet Corn–Brassica Cropping System |
| title_short | Spider Plant (<i>Cleome gynandra</i> L.): An Emerging Weed in the Sweet Corn–Brassica Cropping System |
| title_sort | spider plant i cleome gynandra i l an emerging weed in the sweet corn brassica cropping system |
| topic | <i>Cleome gynandra</i> L. vegetable dormancy germination negatively photoblastic gibberellic acid |
| url | https://www.mdpi.com/2073-4395/13/5/1430 |
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