Photosynthate and Dry Matter Partitioning in Short‐ and Long‐Season Cotton Cultivars

Pace, Patrick F.; Cralle, Harry T.; Cothren, J. Tom; Senseman, Scott A.

doi:10.2135/cropsci1999.0011183x003900040018x

Cited by 39 publications

(32 citation statements)

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“…Maturity and fi neness of fi bers of PM 1218, on the other hand, decreased at the same nodes that fi ber length increased. Pace et al (1999) reported that at early reproductive growth, a short-season cultivar partitioned a higher percentage of dry matter to reproductive growth than a long-season cultivar. It is possible that fi ber fi neness of the lower mainstem FP1 bolls of PM 1218 in 2005 was aff ected more by the dry period than the same bolls of DPL 555 because PM 1218 was partitioning more carbohydrate to reproductive growth at that time.…”

Section: Resultsmentioning

confidence: 99%

A Comparison of Two Cotton Cultivars Differing in Maturity for Within‐Canopy Fiber Property Variation

et al. 2009

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A verage cotton (Gossypium hirsutum L.) fi ber physical properties are measured on every bale marketed in the United States by the USDA-Agricultural Marketing Service using highvolume instrumentation (HVI). Average fi ber properties provide critical information for successfully spinning cotton into yarn and providing a measure of potential yarn quality. Most agronomic research on assessing and improving fi ber properties has focused on improving average fi ber quality measures. Less attention has been paid to quantifying the amount and causes of variation of fi ber properties, although it has long been recognized that cotton fi bers are naturally variable (Balls, 1928). Reducing the variability for individual fi ber properties within bales appears important for further quality improvements of cotton crops. Lewis (1999) suggested that to improve cotton quality for modern spinning mill operations, as much attention should be paid to the amount of variability within a bale of cotton for fi ber length, strength, and micronaire as to the average values of these properties. ) in either year. Averaged over all mainstem node positions, DPL 555 had fi bers that were longer and fi ner than fi ber of PM 1218 in both years. PM 1218 had higher fi ber glucose and fi ber extract conductivity than DPL 555 among FP1 bolls both years. First-branchposition bolls that developed early during a prolonged rain-free period in 2005 had shorter fi bers that were coarser than bolls that began developing near the end of the rain-free period. The data suggest water-defi cit stress conditions during boll development affects fi ber length of these two cultivars similarly, but water-defi cit stress effect on fi ber secondary wall characteristics is genotype dependent. A Comparison of Two Cotton Cultivars

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Section: Resultsmentioning

confidence: 99%

A Comparison of Two Cotton Cultivars Differing in Maturity for Within‐Canopy Fiber Property Variation

et al. 2009

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“…The yield advantage was mainly ascribed to the increased number of bolls per unit area, boll weight, and moderate plant population. Earlier fl ower bud diff erentiation regulated by phytohormones (Ren et al, 2002), more allocation of stored carbohydrate to reproductive structure (Guo et al, 1998;Pace et al, 1999), and higher Chl and N concentration in leaves (Deng and Jiang, 1987) have contributed to the early maturity of short-season cotton even at late planting. Maximum yields were obtained in the U.S. Mississippi Delta within a population range of 7.0 to 12.1 plants m -2 (Bridge et al, 1973).…”

Section: Discussionmentioning

confidence: 99%

Late Planting of Short‐Season Cotton in Saline Fields of the Yellow River Delta

Dong

Xin

et al. 2010

Crop Science

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Normal planting of full‐season cotton (Gossypium hirsutum L.) (NPF) in saline fields of the Yellow River valley, China, is currently faced with poor stand establishment, late maturity, and increasing cost of inputs. Our objective was to determine if late planting of short‐season cotton (LPS) may alleviate these problems. In the first experiment, the effects of cultivar, planting date, seeding rate, and their interactions on stand establishment and seedling Na+ and malondialdehyde concentrations were studied. We also compared varietal effects, input costs, and gross economic returns under NPF and LPS. Late planting improved stand establishment due to increased temperature and reduced Na+ and malondialdehyde concentrations in cotton tissues. The LPS at 21 kg seeds ha−1 (LPSM) and NPF at 30 kg seeds ha−1 (NPFH) yielded better than other treatment combinations. Varietal effects on lint yield were not significant. The output value of both systems was comparable; however, the net revenue from LPSM was 32% greater than that from NPFH due to lower material cost and labor inputs. Late planting of short‐season cotton is a promising option for cotton production in saline areas of the Yellow River delta and probably in other cotton‐growing areas with similar ecologies.

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“…1988, Li and Jiang 1992). Cotton yield is subdivided into the number of bolls per ground area, boll size and lint percentage, which are closely associated with the size and capacity of either assimilate sources, reproductive sinks or dynamic balance of source and sink (Pace et al. 1999).…”

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Heterosis in yield, endotoxin expression and some physiological parameters in Bt transgenic cotton

Dong¹,

Tang

et al. 2007

Plant Breeding

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Although heterosis in cotton has been studied for many decades, very little is known about the performance of hybrids derived from Bt transgenic cotton parents. In order to known better the heterosis performance, yield and endotoxin expression in 20 hybrids (F 1 ) and their Bt transgenic parents were examined from 2002 to 2003 (Experiment 1), and the dynamics of source, sink and their ratios in a well-performing hybrid H01 were investigated in 2004 and 2005 (Experiment 2). Results in Experiment 1 showed an average midparent heterosis of 21.3% and an over check heterosis of 7.6% in lint yield. Considerable heterosis was also detected in boll numbers, boll size and Bt protein content. Of the 20 hybrids, H01 (K0215 · K643) exhibited the greatest heterosis in yield and Bt protein content in 2002 and 2003, while lint yields of H01 were increased 12.6% and 9.1% in 2004, and 11.7% and 8.9% in 2005, compared with K0215 and K643 in Experiment 2, respectively. Significant heterosis for dry matter accumulation and dry matter allocation to reproductive organs and ratio of fruiting forms/total plant (w/w) were also detected in H01. Sources (leaf area, leaf area index, leaf dry weight per plant and diurnal performance of photosynthesis), sinks (number of fruiting nodes, fruiting forms and dry weight of fruiting forms per plant) and the flow from source to sink were significantly enhanced in H01 relative to its parents. Both total N and Bt protein in H01 were higher than those in its parents. Significant correlation was also found between total N and Bt protein in the main-stem leaves (R 2 ¼ 0.877**). It is concluded that there existed considerable heterosis in yield, yield components and endotoxin expression in some Bt transgenic hybrids. Yield advantage of hybrid cotton (F 1 ) over parents can be attributed to improved source, sink and flow, while the enforced expression of Bt genes in hybrid cotton appeared to be due to the enhanced nitrogen level in plants.

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Photosynthate and Dry Matter Partitioning in Short‐ and Long‐Season Cotton Cultivars

Cited by 39 publications

References 0 publications

A Comparison of Two Cotton Cultivars Differing in Maturity for Within‐Canopy Fiber Property Variation

A Comparison of Two Cotton Cultivars Differing in Maturity for Within‐Canopy Fiber Property Variation

Late Planting of Short‐Season Cotton in Saline Fields of the Yellow River Delta

Heterosis in yield, endotoxin expression and some physiological parameters in Bt transgenic cotton

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