Increased Yield and Revenue with a Seedling Transplanting System for Hybrid Seed Production in Bt Cotton

Dong, Hezhong; Li, W. J.; Tang, Wei; Li, Z. H.; Zhang, D. M.

doi:10.1111/j.1439-037x.2004.00130.x

Cited by 46 publications

(32 citation statements)

References 14 publications

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“…Transgenic cotton expressing Bt genes from B. thuriengenesis is rapidly planted GM crop in the world (James, 2002;Barwale et al, 2004;Dong et al, 2005). The genetically modified crops have been widely accepted and adopted reaching to 175 million hectares (James, 2013).…”

Section: Introductionmentioning

confidence: 99%

Mendelian segregation pattern and expression studies of insecticidal gene (cry1Ac) in insect resistant cotton progeny

Hussain

Bakhsh

Munir

et al. 2014

Emir. J. Food Agric

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The progenies of transgenic lines Bt-14 and Bt-17 developed as an independent transformation event from a local cotton variety CIM-482 harboring two insecticidal genes (cry1Ac & cry2a) were evaluated to determine resistance against lepidopterans, mainly Helicoverpa armigera L. under field conditions. The standard molecular techniques, i.e. polymerase chain reaction (PCR), enzyme-linked immunosorbent assay (ELISA) and western dot blot were used to confirm gene presence and expression level of transformed Bt gene, and its transfer pattern to further progeny. PCR confirmed integration of insecticidal gene in most of the plants in transgenic progeny, while expression of Bt gene quantified by ELISA and western dot blot showed variation in cry1Ac expression levels but interestingly, it conferred full protection against targeted insect pests. The leaf bioassays were conducted to determine the effectiveness of Bt genes against Helicoverpa armigera by calculating the mortality percentage of larvae. Most of the transgenic lines showed 70-100% mortality % age of Helicoverpa armigera. The agronomic characteristics of the transgenic lines were also recorded along with non transgenic control variety CIM-482. Morphological, agronomic and fibre data of these transgenic lines was recorded and analyzed statistically. Our results show that these transgenic lines (especially Bt-17 line) are promising cotton germplasm to be used in an efficient breeding programme.

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Section: Introductionmentioning

confidence: 99%

Mendelian segregation pattern and expression studies of insecticidal gene (cry1Ac) in insect resistant cotton progeny

Hussain

Bakhsh

Munir

et al. 2014

Emir. J. Food Agric

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“…It is commonly understood that flowers appearing during July and August cannot produce good quality lint due to the poor opening of harvestable bolls under the prevalence of high temperatures during this growth period (Dong, Zhang, Tang, Li, & Li, 2005a;Dong, Li, Tang, Li, & Zhang, 2005b;Ali et al, 2010;Tariq et al, 2017). Thereby, early planting during March may reduce the chance of adverse effects of early and mid-season high temperatures (Pettigrew, 2002;Khan, Khaliq, & Ahmad, 2004;Ali et al, 2009;Usman et al, 2009;Wajid et al, 2010;Ali, Hameed, Ahmad, Shahzad, & Sarwar, 2014a;Ali et al, 2014b).…”

Section: Introductionmentioning

confidence: 99%

<b>Cotton productivity enhanced through transplanting and early sowing

Ahmad

Iqbal

Muhammad

et al. 2018

Acta Sci. Biol. Sci.

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ABSTRACT. Due to high temperatures in arid regions, cotton crop emergence and early establishment of seedlings are adversely affected. Field studies were undertaken to quantify the effects of transplantation of cotton (Gossypium hirsutum L.) seedlings during the early part of the growing season (March) and crop season (May) for potential realization of cotton productivity under the harsh weather of the southern part of Punjab province, Pakistan. Treatments, consisting of (a) two planting dates (March and May), and (b) two sowing methods (transplanting of seedlings and direct seeding), were arranged in a randomized complete-block design with four replications. Results showed that transplanting seedlings improved the productivity of cotton by 14.2% over direct seeding. Productivity was also increased substantially (34.8%) by planting during March over May sowing. The practice of planting cotton by transplanting seedlings and early sowing could be successfully adapted in areas where high temperatures coincide with the May planting and peak blooming periods in different cotton growing areas.Keywords: heat stress; irrigated arid environment; planting techniques; planting time.Aumento da produtividade do algodão por meio de transplante de mudas e semeadura precoce RESUMO. Altas temperaturas, em torno de 48ºC, prevalecem durante os meses de maio na parte do sul da província de Punjab, no Paquistão. A esta temperatura a emergência da colheita de algodão e o estabelecimento precoce da plântula são adversamente afetados. Estudos de campo foram realizados para quantificar os efeitos do transplante de mudas de algodão (Gossypium hirsutum L.) durante a primeira parte da estação de crescimento (março) e da safra (maio) para a realização potencial da produtividade do algodão sob condições adversas da parte sul do Punjab Província-Paquistão. Os tratamentos, consistindo em (a) duas datas de plantio (março e maio), e (b) dois métodos de semeadura (transplante de mudas e semeadura direta), foram dispostos em delineamento em blocos ao acaso com quatro repetições. Os resultados mostraram que o transplante de mudas melhorou a produtividade do algodão em 14,2% em relação à semeadura direta. A produtividade também aumentou substancialmente (34,8%) com o plantio em março sobre a semeadura de maio. A prática de plantio de algodão por transplante de mudas e sua semeadura precoce poderia ser adaptada com sucesso, onde a alta temperatura coincide com o tempo de plantio durante o mês de maio e períodos de florescimento máximo em diferentes áreas de cultivo de algodão.Palavras-chave: estresse por calor; ambiente árido irrigado; técnicas de plantio; tempo de plantio.

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“…(1) The root systems of transplanted cotton are significantly damaged, with many fine roots being lost when the cotton is transplanted into the field. This root damage decreases the ability of transplanted cotton to absorb moisture and nutrients; (2) After transplantation, the growth environment of the roots changes from a substrate containing high levels of nutrients and moisture in the seedling greenhouse to relatively poor soil in the field [3,4]. Therefore, the speed and quality of root recovery after transplantation are important factors that affect the root water uptake and yield of transplanted cotton; (3) The root systems of direct-seeded cotton are arranged in the shape of an inverted cone, whereas the roots of transplanted cotton are arranged in the shape of a claw [10].…”

Section: Root Characteristics Of Transplanted Cottonmentioning

confidence: 99%

“…This pattern can improve cultivated land use efficiency and allow both cotton and grain crops to be harvested [2,3]. Compared to the traditional winter wheat-cotton intercropping system, transplantation of cotton after winter wheat harvest can increase the winter wheat planting area by 40% and is beneficial for mechanized cultivation [4][5][6]. In addition, water scarcity is the most critical factor restricting agricultural development on the NCP [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Root Development of Transplanted Cotton and Simulation of Soil Water Movement under Different Irrigation Methods

Zhang

Liu

Sun

et al. 2017

Water

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Abstract:Winter wheat and cotton are the main crops grown on the North China Plain (NCP). Cotton is often transplanted after the winter wheat harvest to solve the competition for cultivated land between winter wheat and cotton, and to ensure that both crops can be harvested on the NCP. However, the root system of transplanted cotton is distorted due to the restrictions of the seedling aperture disk before transplanting. Therefore, the investigation of the deformed root distribution and water uptake in transplanted cotton is essential for simulating soil water movement under different irrigation methods. Thus, a field experiment and a simulation study were conducted during 2013-2015 to explore the deformed roots of transplanted cotton and soil water movement using border irrigation (BI) and surface drip irrigation (SDI). The results showed that SDI was conducive to root growth in the shallow root zone (0-30 cm), and that BI was conducive to root growth in the deeper root zone (below 30 cm). SDI is well suited for producing the optimal soil water distribution pattern for the deformed root system of transplanted cotton, and the root system was more developed under SDI than under BI. Comparisons between experimental data and model simulations showed that the HYDRUS-2D model described the soil water content (SWC) under different irrigation methods well, with root mean square errors (RMSEs) of 0.023 and 0.029 cm 3 cm −3 and model efficiencies (EFs) of 0.68 and 0.59 for BI and SDI, respectively. Our findings will be very useful for designing an optimal irrigation plan for BI and SDI in transplanted cotton fields, and for promoting the wider use of this planting pattern for cotton transplantation.

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Increased Yield and Revenue with a Seedling Transplanting System for Hybrid Seed Production in Bt Cotton

Cited by 46 publications

References 14 publications

Mendelian segregation pattern and expression studies of insecticidal gene (cry1Ac) in insect resistant cotton progeny

Mendelian segregation pattern and expression studies of insecticidal gene (cry1Ac) in insect resistant cotton progeny

<b>Cotton productivity enhanced through transplanting and early sowing

Root Development of Transplanted Cotton and Simulation of Soil Water Movement under Different Irrigation Methods

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