USE OF AMARANTHUS LINES AS TRAP CROP FOR THE CONTROL OF ALECTRA VOGELII (BENTH) IN COWPEA [VIGNA UNGUICULATA (L.) WALP] PRODUCTION

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dc.contributor.authorAUDU, YUNUSA,
dc.date.accessioned2014-02-17T13:00:47Z
dc.date.available2014-02-17T13:00:47Z
dc.date.issued2013-01
dc.descriptionAudu YUNUSA, B.Sc. BIOLOGY(UDUS)2003 MSC/SCIEN/02184/08-09 A THESIS SUBMITTED TO THE POSTGRADUATE SCHOOL, AHMADU BELLO UNIVERSITY, ZARIA. IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE AWARD OF A MASTER OF SCIENCE DEGREE (BIOLOGY EDUCATION) DEPARTMENT OF BIOLOGICAL SCIENCES, AHMADU BELLO UNIVERSITY, ZARIA, KADUNA STATE, NIGERIA. JANUARY, 2013.en_US
dc.description.abstractCOWPEA (Vigna unguiculata) is an important source of protein in Africa, but its production is being limited by the parasitic plants, particularly Striga gesnerioides and Alectra vogelii. Crop rotation with trap crops has been used for the suicidal germination of seeds of these parasitic plants. Therefore, two laboratory screening and pot experiments were conducted in two trials in the Department of Biological Sciences, Ahmadu Bello University, Zaria, Nigria, to evaluate the possibility of using Celosia/Amaranthus lines as trap crops to control Alectra vogelii (Benth) on cowpea. One Celosia TLV8 and five Amaranthus lines (NH-48, NH-493, NH-452, Tete and Black seeded), distilled water (negative control) and SAMPEA 7 ( positive control ), were screened in the laboratory using the cut-root technique. The pot experiments were conducted to determine the effectiveness of pre-treating Alectra infested bag soils with four population levels high population (15 plants/pot), medium population (10 plants/pot), low population (5 plants/pot) and the control with zero plant of Celosia/Amaranthus lines in reducing Alectra seeds in the soils before planting cowpea. The pre-treated Alectra seeds were exposed to root exudates of Celosia/Amaranthus lines that were sampled at 3, 5 and 7 week after planting (WAP). The cowpea plants under the pot experiment were sampled for growth parameters at 7 and 9 WAP. Generally, higher percentage germination of Alectra seeds was observed from the root content of Celosia/Amaranthus lines at 5 WAP than that obtained at 3 WAP and 7 WAP.SAMPEA 7, 6.66-17.66% for Amaranthus/Celosia lines and 1.12-1.20% for Distilled water (Negative control) at 5 WAP and 13.00-20.00% for SAMPEA, 7.33-15.00% for Amaranthus/Celosia lines, and 1.11-1.22% for Distilled water( Negative control) at 7 WAP. The susceptible cowpea variety SAMPEA 7, exhibited higher stimulation of Alectra seeds germination than all the tested Celosia/Amaranthus lines but this was followed by that of Amaranthus line Tete and NH-48. However, all the Amaranthus lines and SAMPEA 7 (Positive control) produced significantly higher percent germination of Alectra seeds than the distilled water (Negative control) . Observations from the pot experiment showed that, Alectra infected sampled cowpea plants from the medium populaton had a tendency to produce the highest shoot fresh weight and number of root nodules,compared with the controls while the low population produced the tallest plant. Alectra infected sampled cowpea plants from the high population treatment produced the shortest plants with the lowest shoot fresh weight and number of root nodules but had the highest root fresh weight. However, the Alectra uninfected sampled cowpea plants from the Negative control treatment generally produced higher shoot fresh weight, root fresh weight, plant height and root nodules number than the other treatments. Generally, the Positive control treatment produced the highest percent Alectra infection, attached and emerged Alectra number compared with that of the other treatments. On the other hand, the pre-treatment of pot soil with Celosia and Amaranthus lines at the various population levels tended to produce cowpea plants that had higher number of flowers, pod numbers, pod weight, total grain yields and 1000-seed weight than both controls. In conclusion, this study showed that, Celosia and the Amaranthus lines caused suicidal germination of Alectra seeds and therefore could serve as trap crop for Alectra vogelii. The range of percentage germination of Alectra seeds by the tested lines, was 11.66- 12.00% for SAMPEA 7, 7.00-14.00% for Amaranthus/Celosia lines and 1.13-1.38% for Distilled water i.e Negative control at 3 WAP. However, it was 24.00-29.00% foren_US
dc.identifier.urihttp://hdl.handle.net/123456789/1796
dc.language.isoen_USen_US
dc.subjectUSE,en_US
dc.subjectAMARANTHUS,en_US
dc.subjectLINES,en_US
dc.subjectTRAP,en_US
dc.subjectCROP,en_US
dc.subjectCONTROL,en_US
dc.subjectALECTRA,en_US
dc.subjectVOGELII,en_US
dc.subject(BENTH),en_US
dc.subjectCOWPEA,en_US
dc.subject[VIGNA UNGUICULATA (L.) WALP],en_US
dc.subjectPRODUCTION.en_US
dc.titleUSE OF AMARANTHUS LINES AS TRAP CROP FOR THE CONTROL OF ALECTRA VOGELII (BENTH) IN COWPEA [VIGNA UNGUICULATA (L.) WALP] PRODUCTIONen_US
dc.typeThesisen_US
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