Response of New Cotton Variety MNH-700 to Mepiquat Chloride under Varying Plant Population

Iqbal, Muhammad; Khan, Aziz; Hayat, Khezir; Chang, Muhammad Ali

doi:10.3923/pjbs.2004.1898.1902

Cited by 4 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…PGRs such as MC, a gibberellic acid inhibitor, can inhibit increases in plant height, leading to thicker stems. It has also been reported by many researchers that plant height has been reduced by PGRs in different plants (Lamas et al, 2000;Iqbal et al, 2004;Balodis and Gaile, 2009;Espindula et al, 2009;Gencsoylu, 2009). It was found in a study by Spitzer et al (2011) that the plant height of sunflower was reduced by 63 cm with application of chlormequat chloride plus ethephon and by 35 cm with only the application of ethephon.…”

Section: Resultsmentioning

confidence: 71%

“…It was emphasized in another study (Koutroubas et al, 2004) that PGRs are more efficient in the early growth stages (flowering and maturation) of sunflower, and the applications should be applied at the earlier growth stages of sunflower in order to obtain conclusive results from these applications. Similarly, there are many studies reporting beneficial effects of MC on plants such as peas, cotton, barley, and canola (Biles and Cothren, 2001;Sawan et al, 2001;Iqbal et al, 2004;Elkoca and Kantar, 2006). MC application has an effect on yield likely due to the fact that it promotes the physiological process in many plants, because of an increase in carbon dioxide uptake and fixation by plant leaves.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Effects of mepiquat chloride applications on non-oilseed sunflower

Polat¹,

Özer²,

Öztürk³

et al. 2017

Turk J Agric For

View full text Add to dashboard Cite

Introduction Turkey is one of the few countries in the world that is largely self-sufficient in terms of food. The country's fertile soil, access to sufficient water, suitable climate, and hardworking farmers all make for a successful agricultural sector. In addition, a broad range of crops can be raised because of the variety of different climates throughout the land. This has allowed Turkey to become the largest producer and exporter of agricultural products in the Near East and North African regions (Açar et al., 2016; Bozokalfa et al., 2016; İpek et al., 2016). However, despite all efforts to increase oilseed crop production, Turkey continues to be import-dependent for oilseeds and products. Sunflower is the most important oilseed crop of Turkey, with the production of approximately 650,000 ha annually (http://www.fao.org/faostat/en/). Most of the sunflower production areas in Turkey are devoted to oilseed sunflower types, and non-oilseed sunflower production is estimated to be practiced on about 100,000 ha, which corresponds to roughly one-sixth of the total harvested area. Eastern Anatolia is the largest geographical region of Turkey, where non-oilseed sunflower acreage accounts for approximately 90% of the total harvested area (http://www. fao.org/faostat/en/). Sunflower is mainly grown for two principal marketing objectives: oilseed and non-oilseed (confectionery). Non-oilseed sunflower production, although a small, specialized market in comparison with oilseed sunflower, is nevertheless constantly growing in size and importance due to the increasing demand for sunflower seeds in the health-food, confectionary, and snack trades. Plant growth regulators (PGRs) are natural or synthetic organic compounds that control or modify one or more physiological events in plants. These synthetic compounds are widely used in plants, especially in cereals, in reducing plant height. The most commonly used and known PGR group is the gibberellins. Gibberellins affect many physiological functions in plants. They are essentially responsible for controlling cell elongation and shoot and stem growth (Spitzer et al., 2011). When gibberellins are applied to plants, internodes become shorter and leaves become thicker and greener, increasing both drought resistance and net photosynthesis (Arteca, 1995). Mepiquat chloride (MC), which is a gibberellin acid

show abstract

Section: Resultsmentioning

confidence: 71%

Section: Resultsmentioning

confidence: 99%

Effects of mepiquat chloride applications on non-oilseed sunflower

Polat¹,

Özer²,

Öztürk³

et al. 2017

Turk J Agric For

View full text Add to dashboard Cite

show abstract

“…Different hybrids and growth regulator treatments did not exert any significant influence on the quality parameters viz bartlett index, ginning outturn, seed index and lint index in any of the two years of experiment as evident from table-4. Mert and Caliskan (1998) and Iqbal et al, (2004) also reported that growth regulators do not have any effect on the ratio of lint to seed. Athayde and Lamas (1999) and Ghourab et al, (2000) also reported that percentage fibre was not affected by application of PGRs.…”

Section: Effect Of Hybrids and Gr's On Quality Parametersmentioning

confidence: 97%

Response of different Bt cotton (Gossypium hirsutum L.) hybrids to canopy modification practices

Kaul

Deol

Brar

2016

JANS

View full text Add to dashboard Cite

A field investigation was carried out to characterize the growth and development of Bt cotton hybrids by detopping and use of plant growth retardants during the rainy (kharif) season of 2011 and 2012. The experimental site had loamy sand soils with normal in reaction. The experiment (split plot) involved three Bt cotton hybrids (MRC 7017, MRC 7031 and RCH 314) in main plots and growth regulation treatments (Mepiquat chloride (MC) @ 300 ppm, 2, 3, 5-tri iodo benzoic acid (TIBA) @ 100 ppm and Maelic hydrazide (MH) @ 250 ppm) in sub plots with four replications. Hybrid MRC 7017 produced significantly higher (p<0.01) seed cotton yield which was attributed to the maximum number of sympodial branches plant-1, total number of flowers and picked bolls plant-1. Application of MC @ 300 ppm, TIBA @ 100 ppm and MH @ 250 ppm reduced plant height, leaf area index and total dry matter accu-mulation than control. Detopping treatment significantly (p<0.01) reduced plant height than control but attained more plant height than all the PGRs. MC @ 300 ppm, TIBA @ 100 ppm and MH @ 250 ppm at 80 days after sowing had beneficial effect on seed cotton yield. Detopping done at 80 days after sowing failed to influence the seed cotton yield dur-ing both the years. The results revealed that foliar application of MC @ 300 ppm yielded more seed cotton by improv-ing the setting percentage and therefore, increased number of picked (open) bolls plant-1 without exhibiting any ad-verse effect on quality traits.

show abstract

“…Establishment of suitable plant population of cotton is necessary for obtaining high yields. Iqbal et al (2005) opined that plant height should be kept below 76 cm to avoid high humidity in very narrow cotton for efficient control of insect pest descent, good retention and preservation of bolls from rotting. The influence of plant space arrangement on cotton seed yield is partly due to the variation of solar radiation penetrating crop canopy.…”

Section: Yield and Its Contributory Characters Iii1 Effect Of Hill Sp...mentioning

confidence: 99%

Eeffect of Planting Spaces and Topping Time on Productivity of Cotton Variety Super Giza 97

elsayed

El-Hendawy,

2023

Menoufia Journal of Plant Production

View full text Add to dashboard Cite

A field experiment was carried out in 2021 season and repeated in 2022 season at Sakha Agricultural Research Station, Kafr El-Sheikh Governorate, Egypt to assess the effect of using hill spacing and topping time in addition to their interactions on productivity and quality of cotton cultivar Super Giza 97 (Gossypium barbadense L.). The experimental design was a split-plot with 3 replicates. The main plots were devoted to hill spacing (25, 30 and 35 cm), whereas plant topping time (no topping, manual topping at the formation of 12, 14 and 16 fruiting branches/plant) was allocated in the sub-plots. Data indicated that the widder hill spacing (35 cm) significantly increased total bolls number set/plant and bolls setting%, yield of seed cotton per feddan and its contributory characters as well as fiber length. However, plant height, bolls shedding% and the number of actual plants per feddan at harvest in both seasons were decreased. No topping treatment gave a significant excess in the final plant height and sympodia number/plant in the two seasons of study. Topping when 16 fruiting branches were formed on the plant gave a significant decrease in bolls shedding% and significant increase in numbers of total fruiting points and total bolls set/plant and bolls setting%, yield of seed cotton per feddan and its contributory characters in the two seasons in addition to length in the first season.Sowing cotton at 35 cm between plants interacted with topping cotton plants just after the formation of 16 fruiting branches gave the best results. It could be advised to apply this interaction treatment under Sakha region, to increase cotton productivity of cotton cultivar Super Giza 97.

show abstract

Response of New Cotton Variety MNH-700 to Mepiquat Chloride under Varying Plant Population

Cited by 4 publications

References 9 publications

Effects of mepiquat chloride applications on non-oilseed sunflower

Effects of mepiquat chloride applications on non-oilseed sunflower

Response of different Bt cotton (Gossypium hirsutum L.) hybrids to canopy modification practices

Eeffect of Planting Spaces and Topping Time on Productivity of Cotton Variety Super Giza 97

Contact Info

Product

Resources

About