Canopy Photosynthesis and Fiber Properties of Normal‐ and Late‐Planted Cotton

Abstract

the southeast USA, Porter et al. (1996) reported higher fiber strength, greater elongation, and lower micronaire Normal-and late-planted cotton (Gossypium hirsutum L.) often for late-planted cotton. They found no effect of planting differ in fiber properties, especially those properties related to fiber date on fiber length. Cathey and Meredith (1988) found secondary wall characteristics. This field study was conducted to (i) determine the effect of planting date on fiber properties of bolls at that late planting reduced micronaire but did not affect two flowering times, and (ii) determine the relationship between fiber fiber length, strength, or elongation. Bauer et al. (1998) properties and canopy photosynthesis during development of those found that cotton planted in late May had fiber with bolls. Cotton ('Stoneville 453') was planted on 3 May and 3 June in higher yarn strength, greater elongation, and greater 1995 and 3 May and 31 May in 1996. Canopy photosynthesis was fiber length, but lower micronaire and fiber maturity measured 10 to 12 times on sunny days from initial flowering through than fiber produced from cotton planted in late April. the end of the season. Fiber properties were determined on first Recent evidence suggests that carbohydrate supply sympodial position bolls that bloomed during the first and fourthcan affect fiber properties of cotton. Pettigrew (1995) week of flowering (WOF). Maximum canopy photosynthesis was 21% evaluated the effects of irradiance on cotton fiber prophigher in 1996 than in 1995 and lint yield was 22% greater in 1996 erties. He found that higher irradiance, which would than in 1995. Within each year, average maximum canopy photosynthesis did not differ between planting dates, although yield was approx-increase carbohydrate supply through higher photosynimately 30% lower for the late planting date each year. Bolls from thetic rates, increased micronaire and fiber strength. the first WOF generally had lower lint percent, higher short fiber Jones et al. (1996) indirectly measured carbohydratecontent, lower elongation, and lower whiteness index than bolls from supply effect on fiber properties by removing flowers, the fourth WOF. Micronaire, immature fiber fraction, and fiber crosswhich reduced competition for carbohydrate among the sectional area were linearly related to the amount of canopy photosynremaining developing bolls. Flower removal resulted in thesis that occurred from 15 to 45 d after flowering. Our results are higher boll weight and micronaire of the remaining bolls consistent with the hypothesis that assimilate supply influences cotton in that study. fiber properties associated with secondary wall characteristics.Canopy photosynthesis of cotton increases until 80 to 90 d after planting as plants develop leaf area, then decreases as leaves in the canopy age (

Photosynthetic characteristics of the subtending leaf and the relationships with lint yield and fiber quality in the late-planted cotton

“…& Zhiguo Zhou giscott@njau.edu.cn resulted in reduced lint yield with low boll weight due to delayed maturity and carbohydrate deficiency (Arshad et al 2007;Bauer et al 2000;Gwathmey and Clement 2010). The response of fiber quality to planting date had not come to an agreement because plant density, fertilization, weather events and cultivars adaptation can all influence fiber quality (Gipson and Joham 1968;Liakatas et al 1998).…”

Sowing date and boll position affected boll weight, fiber quality and fiber physiological parameters in two cotton (Gossypium Hirsutum L.) cultivars

“…However, cotton growers often lost the optimal sowing date waiting for the harvest of preceding full-season winter crops. Former studies indicated that late sowing usually resulted in reduced yield and declined fiber quality (Bauer et al, 2000;Bange and Milory, 2004;Davidonis et al, 2004;Dong et al, 2006). The changed yield and fiber quality were due to suboptimal weather conditions in late sowing date (Gormus and Yucel, 2002).…”

Optimizing yield and fiber quality of cotton under mediterranean environment: managing nitrogen and potassium nutrition

“…Vegetative growth and plant biomass were decreased under K deficient 577 Gormus et al conditions (Kerby & Adams, 1985), because potassium plays an important role in photosynthesis, accumulation and allocation of carbohydrates (Reddy & Zhao, 2005). Micronaire is linearly related to the sufficient amount of carbohydrate supply for developing bolls provided by canopy photosynthesis (Bauer et al, 2000).…”