+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Performance of cottons gossypium hirsutum when infested with tobacco budworm heliothis virescens

, : Performance of cottons gossypium hirsutum when infested with tobacco budworm heliothis virescens. Crop Science 26(1): 93-95

Thirteen germplasm lines of cotton, Gossypium hirsutum L., including seven cultivars were grown for 3 years with and without tobacco budworm, Heliothis virescens F. There is a paucity of information available on the performance of cotton germplasm when grown under tobacco budworm infestation. Development of insecticide resistance in this insect or a loss of effective insecticides from the market would pose substantial problems for the cotton industry. Objectives of this study were (i) to determine the the performance of 13 diverse germplasm lines when grown udner controlled, uniform levels of tobacco budworm infestation, (ii) to identify germplasm useful to breeders for use in developing cultivars resistant to tobacco budworm, (iii) to identify germplasm lines with different levels of resistance useful for studies on how or why cotton germplasm resist tobacco budworm and (iv) to develop information useful for improving breeding practices in cotton. Plots were grown on a Leeper silty clay loam, fine montmorilloritic, non-acid, thermic, chromonderitic, Haplaquept, 0 to 2% slope. Infested plots were inoculated with first instar tobacco budworm larvae five to six times at weekly intervals beginning about the second week of squaring as determined in 'Stoneville 213'. Worm-free plots were sprayed weekly with fenvalerate [cyano(3-phenoxyphenyl)methyl 4-chloroalpha-(1-methylethyl)benzeneacetate]. Resistance was measured as the ability to resist yield loss when continually infested with tobacco budworm larvae for 5 to 6 weeks. Resistance was identified in 'Stoneville 506' and confirmed in PEE DEE 875, PEE DEE 8619 and 'Tamcot CAMD-E'. Because two are cultivars and are presently being grown, information on them can immediately be put to use. Each of the four germplasms should be useful to breeders as parental lines to increase resistance to tobacco budworm. Regression analyses on one year's data suggest that abouy 65% of the resistance is associated with early, rapid fruiting. However, additional unidentified factors are also involved.


Other references

Salfi, M., 1936: Note sulla morfologie della tibia e del tarso in Haematopinus suis (Linn.). Bollettino di Zoologia Torino, 7: 105-111

Wyer, P.C., 2006: Review: medical history, physical examination, and routine tests are useful for diagnosing heart failure in dyspnea. Acp Journal Club 144(2): 49-49

Aydogan, F.; Saribeyoglu, K.; Simsek, O.; Salihoglu, Z.; Carkman, S.; Salihoglu, T.; Karatas, A.; Baca, B.; Kucuk, O.; Yavuz, N.; Pekmezci, S., 2009: Comparison of the electrothermal vessel-sealing system versus endoclip in laparoscopic appendectomy. Various techniques have been used for the division of mesoappendix, such as endoloops, endoscopic linear cutting staplers, an electrothermal vessel-sealing system (LigaSure), the Harmonic Scalpel, clips, and bipolar coagulation. In the present stu...

Yoshioka T.; Zeller W.P.; Goto M.; Gottschalk M.E.; Anderson C.L., 1992: Feeding alters plasma endotoxin lps concentration in 10 day old rats. Pediatric Research 31(4 PART 2): 38A

Singh, L.; Laale, HW., 1972: The antigenic pattern of the developing brain of the zebrafish, Brachydanio rerio. Journal Exp Zool, 1823: 345-356

Bing, R., 1928: Periodic hypothyroidism. Three of the 5 cases studied in human 9 indicate that there is a relationship between the hypothy-roid cycle and the sex cycle. The evidence from the other 2 is not conclusive. The cycles of the 1st 3 cases are considered as due to thyroid instabi...

Mackie, I.C.; Worthington, H.V.; Hobson, P., 1993: An investigation into sugar-containing and sugar-free over-the-counter medicines stocked and recommended by pharmacists in the north western region of England. A questionnaire-based study on the practices of pharmacists with regard to paediatric medicines is reported. Of the 14 most popular named medicines (those stocked by >90% of the 555 pharmacists studied in 1990), only 2 were sugar-free, while th...

Hsin, L.W.i; Prisinzano, T.; Wilkerson, C.R.; Dersch, C.M.; Horel, R.; Jacobson, A.E.; Rothman, R.B.; Rice, K.C., 2003: Synthesis and dopamine transporter affinity of chiral 1- methoxyethyl-4-. A series of optically pure phenyl-and non-phenyl-substituted 1-(2-(bis(4-fluorophenyl)methoxy)ethyl)-4-(2-hydroxypropyl)piperazines was synthesized and their binding affinity for dopamine transporter (DAT) was investigated. The analogues with a hy...

Kan, K.K.W.; Jones, R.L.; Ngan, M.P.i; Rudd, J.A., 2002: Actions of prostanoids to induce emesis and defecation in the ferret. Several prostanoids were investigated for their ability to induce emesis and/or defecation and tenesmus in the ferret. The rank order of emetic potency (dose producing four episodes, D4) was: sulprostone (5 mug/kg)>11alpha,9alpha-epoxymethano-1...

van Holsbeeck, M.; Powell, A., 1995: Ankle and foot. Clinics in Diagnostic Ultrasound 30: 221-237