Mutants of Gossypium hirsutum: Effect on Pink Bollworm in Arizona12

Wilson, R. L.; Wilson, F. D.; George, B. W.

doi:10.1093/jee/72.2.216

Cited by 8 publications

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“…Lower seed damage caused by pink bollworms was observed in okra leaf cotton isolines when compared with the normal leaf type (Wilson et al 1977(Wilson et al , 1979Wilson and George 1982;Wilson 1986). The earliness of the okra leaf varieties, the rapidity of flowering and boll development, the physical (thicker carpel wall) or chemical changes in the carpel wall, and the inability of larvae to penetrate the carpel wall were reported as the possible reasons for the reduced seed damage caused by pink bollworm (Wilson et al 1979.…”

Section: Introductionmentioning

confidence: 96%

Effect of cotton cultivars on the oviposition preference of pink bollworm (Lepidoptera: Gelechiidae)

Chatzigeorgiou

Papadopoulos

Prophetou‐Athanasiadou

2010

J Pest Sci

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The effect of four cotton cultivars on the oviposition behavior of the pink bollworm Pectinophora gossypiella (Saunders) was studied under laboratory and semi-field conditions. Young plants and bolls from four commercial upland cotton cultivars (Lachata, Macnair-220, Midas and Sandra) cultivated in the area of Thessaloniki were used. The four cultivars had palmate leaves, and nectaries on both leaves and bolls. Differences were observed in the trichome density and the length of leaf petiole among the cultivars. The typical shape of bolls was either round or ovate. Differences were observed among the cultivars tested in boll size and bract's length. In a series of experiments we recorded the number of eggs oviposited in no-, two-, three-, and four-choice tests using either young plants or bolls. Although the four cotton cultivars exhibited a variation in morphological characteristics, the mean number of eggs oviposited on young plants and bolls did not differ among them in two-, three-, and four-choice experiments. Substantially higher number of eggs were oviposited on either young plants or bolls of Midas in no-choice experiments. Eggs were oviposited mainly on newly developed unfolded leaves of the young plants and under the calyx of the bolls. In a semi-field experiment, we found a clear oviposition preference for bolls compared with plant terminals in all the cultivars tested. Females oviposited similar number of eggs in the four cultivars. We discuss the effect of morphological characteristics of cotton cultivars on the oviposition behavior of pink bollworm.

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Section: Introductionmentioning

confidence: 96%

Effect of cotton cultivars on the oviposition preference of pink bollworm (Lepidoptera: Gelechiidae)

Chatzigeorgiou

Papadopoulos

Prophetou‐Athanasiadou

2010

J Pest Sci

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“…In addition, these cultivars initiate more bolls than they can support, leading to higher rates of abortion [ 19 ]. Using near-isogenic lines showed that okra leaf cultivars had less damage from the pink bollworm (PBW) Pectinophora gossypiella [ 20 , 21 ]. Again, the reduction in this infection was partially due to earliness of okra leaf cultivars [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

“…Using near-isogenic lines showed that okra leaf cultivars had less damage from the pink bollworm (PBW) Pectinophora gossypiella [ 20 , 21 ]. Again, the reduction in this infection was partially due to earliness of okra leaf cultivars [ 20 ]. In another study using leaf shape NILs, it was shown that only three genetic backgrounds out of seven had a reduction in PBW damage by okra leaf genotypes [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

“…In another study using leaf shape NILs, it was shown that only three genetic backgrounds out of seven had a reduction in PBW damage by okra leaf genotypes [ 22 ]. Another study showed that Stoneville 7A-Okra was 50% damage from PBW than its NIL [ 20 , 22 ] due to decreased boll penetration by PBW larvae, and Stoneville 7A-Okra leaf genotypes had increased thickness of the carpel (boll) walls in some genetic backgrounds [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

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Cottonseed Protein, Oil, and Minerals in Cotton (Gossypium hirsutum L.) Lines Differing in Curly Leaf Morphology

Bellaloui

Turley

Stetina

2021

Plants

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Cottonseed is an important source of protein, oil, and minerals for human health and livestock feed. Therefore, understanding the physiological and genetic traits influencing the nutrient content is critical. To our knowledge, there is no information available on the effects of leaf shape—curly leaf (CRL)—on cottonseed protein, oil, and minerals. Therefore, the objective of the current research was to investigate the effect of the curly leaf trait on cottonseed protein, oil, and minerals in cotton lines differing in leaf shape. Our hypothesis was that since leaf shape is known to be associated with nutrient uptake, assimilation, and photosynthesis process, leaf shape can influence seed protein, oil, and minerals. A two-year field experiment using two curly leaf lines (Uzbek CRL and DP 5690 CRL) and one normal leaf (DP 5690 wild type) line was conducted in 2014 and 2015 in Stoneville, MS, USA. The experiment was a randomized complete block design with three replicates. The results showed that both Uzbek CRL and DP 5690 wild type lines had higher seed oil, and nutrients N, P, K, and Mg than DP 5690 CRL. Calcium was higher in DP 5690 CRL for two years and protein was only higher than the parents in 2015. Consistent significant positive and negative correlations between some nutrients were observed, which may be due to environmental conditions, especially heat. This indicates that curly leaf trait may partially regulate the accumulation of these nutrients in seeds. The results demonstrated that leaf shape trait—curly leaf—can affect cottonseed nutritional qualities. This research is important to breeders for cotton selection for high seed oil or protein, and to other researchers to further understand the genetic impact of leaf shapes on seed nutritional quality. It is also important for scientists to use leaf shape as a tool for physiological, biochemical, and morphological research related to leaf development.

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“…Wilson & Wilson (1976) reported that the nectariless characteristic incorporated into Deltapine and Stoneville cultivars significantly reduced infestations by P. gossypiella. Additionally, the okra-leaf characteristic resulted in reduced seed damage caused by P. gossypiella in some strains of cotton (Wilson et al, 1979) due to reduced ability of larvae to penetrate the carpel wall .…”

Section: Introductionmentioning

confidence: 99%

Suppression of pink bollworm and effect on beneficial insects of a nectariless okra-leaf cotton germplasm line

Flint

Wilson

Parks

et al. 1991

Bull. Entomol. Res.

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Infestations of pink bollworm, Pectinophora gossypiella (Saunders), (Lepidoptera: Gelechiidae), and numbers of beneficial insects in two cottons, Gossypium hirsutum, were compared at Maricopa, Arizona, and Brawley, California, during the 1986-1988 seasons. Plots (0.8 ha) of WC-12NL (nectariless, okraleaf, and early maturing) had significantly lower boll infestations than DPL-61 (nectaried, normal leaf, and later maturing) for each location and year. The three year average (range) PBW/100 bolls for WC-12NL and DPL-61 at Maricopa were 6.8 (5.7-10.7) compared to 11.2 (6.8-15.7), respectively. At Brawley the averages were 18.9 (9.3-27.6) compared to 39.2 (15.5-52.5), respectively. With the exception of 1986 at Maricopa, the percentage of bolls with eggs was significantly greater for DPL-61 (average 8.1, range 3.4-16.0) than for WC-12NL (average 4.2, range 1.1-12.1) for each location and year. Both cottons averaged about four eggs per oviposited boll; not significantly different. The numbers of Lygus spp. and three beneficial species of insects were not different in the two cottons. Collops vittatus (Say) (Coleoptera: Melyridae) was collected in significantly greater numbers in WC-12NL (1.0 per 50 sweeps compared to 0.9 for DPL-61), while Hippodamia convergens (Guerin-Meneville) (Coleoptera: Coccinellidae) was collected in greater numbers in DPL-61 (0.6 per 50 sweeps compared to 0.3 for WC-12NL). WC-12NL is the culmination of a 20-year breeding programme for resistance to P. gossypiella and has characteristics attractive for cotton production in areas where a shorter growing season is desirable.

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Mutants of Gossypium hirsutum: Effect on Pink Bollworm in Arizona12

Cited by 8 publications

References 0 publications

Effect of cotton cultivars on the oviposition preference of pink bollworm (Lepidoptera: Gelechiidae)

Effect of cotton cultivars on the oviposition preference of pink bollworm (Lepidoptera: Gelechiidae)

Cottonseed Protein, Oil, and Minerals in Cotton (Gossypium hirsutum L.) Lines Differing in Curly Leaf Morphology

Suppression of pink bollworm and effect on beneficial insects of a nectariless okra-leaf cotton germplasm line

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