Download or read book Evaluation of Phosphorus uptake Efficiency of Sorghum Genotypes written by Enoch Abiodun Salako and published by . This book was released on 1980 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Sorghum Genotypes for Water Use Efficiency and Nitrogen Use Efficiency written by Madhulika and published by . This book was released on 2002 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Differences in Phosphorus Uptake Distribution and Use by Sorghum Genotypes Grown with Low Phosphorus written by Angela Maria C. Furlani and published by . This book was released on 1981 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sorghum for Acid Soils written by Lynn M. Gourley and published by CIAT. This book was released on 1987 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil in the tropics, classification and characteristics; phosphorus availability in the acid soils of tropical America; analysis methodologyfor tropical soils; strategies implied in the use and management of acid soils in Tropical America; a new methodology to select cultivars tolerant to aluminium and with high yield potential; calcium and root penetration in highly weathered soils; sorghum evaluation in the Llanos of Venezuela; potential role of grains sorghum in the agricultural systems of regions with acid soils in tropical latin america; effective screening techniques for tolerance to aluminium toxicity; tolerance to aluminium toxicity in upland rice for acid soils; breeding methodologyfor phosphorus efficiency and tolerance to aluminium and manganesetoxicities for beans (Phaseolus vulgaris L.); world sorghum germplasm collection and conservation; prospects for sorghum improvement for phosphorus efficiency; evaluation of mineral elements in sorghum grown onacid tropical soils; breeding aluminum-tolerant sorghums; finding and utilizing exotic al-tolerant sorghum germplasm.

Download or read book Determining the Molecular Basis of Phosphorus Efficiency in Tropical Maize and Sorghum Genotypes written by M. J. V. de VASCONCELOS and published by . This book was released on 2004 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maize and sorghum are important crop species of the Brazilian savanna vegetation algo known as "cerrado". The soils in "cerrado" are mainly acidic which render phosphorus (Pi) unavailable to the plants. Pi is one of the essential nutrients required by plants and govems their growth, development and yield potentials. Coordinated induction of high affinity Pi transporters is one of the earlier molecular responses to Pi deficiency. In this study I used the genotypes of maize and sorghum exhibiting a wide spectrum of variability in their Pi use efficiency. To evaluate the role of Pi transporters in Pi utilization, I isolated and characterized high affinity Pi transporters (SbPT-1 and SbPT-2) from Sorghum bicolor. These transporters along with Pi transporters from Zea mays were transcriptionally regulated by Pi and exhibited spatio-temporal expression. Interestingly, the induction of SbPTs in stem of Pi efficient genotypes under nutrient deficiency suggest that not only acquisition but algo mobilization of Pi to different parts of the plants could have significant impact on yield potential. Furthermore, Pi transporters from maize and sorghum revealed differential expression in different parts of the root. In addition, microarray analysis of transcripts from phosphorus deficient roots of maize revealed a set of genes, such as those encoding a member of sulphate transporter family, A-1, glycerol-3-phosphate permease and BAT-3 a proline rich protein, which were responsive to Pi deficiency. A correlation was algo observed between the higher Pi use efficiency of the genotypes and some of the biochemical traits such as Pi content and anthocyanins accumulation in roots and shoots. There were striking differences in acid phosphatase activity between Pi efficient and inefficient genotypes. The study suggests that Pi transporters and some of the Pi responsive genes identified through microarray could serve as molecular determinants of Pi use efficiency in crop species grown in Pi-deprived acidic soils. These studies clearly showed that different molecular and biochemical traits contribute towards phosphorus efficiency in tropical maize and sorghum.

Download or read book Evaluation of Diverse Sorghum Genotypes Sorghum Bicolor L Moench for Nitrogen and Water Use Efficiency at Three Growth Stages written by Joseph K. Kemei and published by . This book was released on 2003 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Sorghum Genotypes for Variation in Canopy Temperature and Drought Tolerance written by Raymond Ngao Mutava and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Sorghum (Sorghum bicolor L. Moench) is the fifth most economically important cereal crop grown worldwide and adapted to a wide range of climatic conditions. Drought stress has been ranked as one of the most significant causes of crop yield loss with its effects on yield and yield components. Conservative water use by plants is one of the strategies that can be used as a drought coping mechanism. The slow wilting trait has been associated with conservative water use and has been found in some sorghum genotypes. The purpose of this study was to use canopy temperature to screen for drought tolerance in sorghum, evaluate water use efficiency for slow wilting sorghum genotypes and determine variability in root morphology and response to drought among sorghum genotypes. Canopy temperature studies were conducted under field conditions using infrared (IR) sensors while water use efficiency and root studies were conducted under greenhouse conditions. Our results showed a distinct separation in canopy temperature among genotypes under field conditions at 2:00 pm to 6:00 pm. Midday canopy temperature depression (CTD) was positively correlated to yield (R2 = 0.19) and harvest index (R2 = 0.11). CTD was also stable for all the genotypes during the period from 1:00 pm to 7:00 pm. There was a negative correlation between CTD and crop water stress index (CWSI) (R2 = 0.34) and a positive one between canopy temperature and CWSI (R2 = 0.50). Evaluation of genotypes for water use efficiency revealed significant variability among sorghum genotypes in the amount of water used (10.48 - 13.52 kg) and transpiration efficiency (TE) (2.64 - 7.11 g kg−1) among genotypes. Slow wilting genotypes were high in TE. Rooting depth increased for some genotypes under drought stress with genotype SC1124 recording the largest increase (180%). Total root length for some genotypes increased by 11 - 113% with genotypes SC224 and SC1019 recording the greatest increase. There was a positive correlation between water used and root length (R2 = 0.21). These results show that there is potential for selection of drought tolerance in sorghum and that genotypes with the slow wilting traits are efficient in water use.

Download or read book Fertilizer Abstracts written by and published by . This book was released on 1978 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Plant Nutrients and Abiotic Stress Tolerance written by Mirza Hasanuzzaman and published by Springer. This book was released on 2018-06-01 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses many aspects of plant-nutrient-induced abiotic stress tolerance. It consists of 22 informative chapters on the basic role of plant nutrients and the latest research advances in the field of plant nutrients in abiotic stress tolerance as well as their practical applications. Today, plant nutrients are not only considered as food for plants, but also as regulators of numerous physiological processes including stress tolerance. They also interact with a number of biological molecules and signaling cascades. Although research work and review articles on the role of plant nutrients in abiotic stress tolerance have been published in a range of journals, annual reviews and book chapters, to date there has been no comprehensive book on this topic. As such, this timely book is a valuable resource for a wide audience, including plant scientists, agronomists, soil scientists, botanists, molecular biologists and environmental scientists.

Download or read book Food Security in Nutrient Stressed Environments Exploiting Plants Genetic Capabilities written by J.J. Adu-Gyamfi and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultimate success in exploiting the genetic capabilities of plants to grow in nutrient-stressed environments of the semi-arid tropics (SAT) requires a holistic view of food systems to ensure that genetic selections for improved yields on nutrient-poor soils will actually be adopted by farmers. This book sets out to address the important issue of how physiological mechanisms of nutrient uptake can best be combined with genetic options to improve the adaptation of crops to low-nutrient availability, thereby enhancing productivity of nutrient poor soils in the semi-arid tropics. The book examines (i) the sustainability of breeding for low-nutrient environments from the viewpoint of three interrelated disciplines; physiology, breeding, and socio-economics, (ii) candidate mechanisms and physiological traits to enhance uptake and utilization efficiencies, (iii) genetic approaches for manipulation of crop plants to enhance root exudation and access nutrients in the rhizosphere, and (iv) field practices and farmers' preferences for crop varieties grown in low-nutrient environments. Finally, the role of modelling in improving nutrient efficiency in cropping systems, recommendations for future research needs and strategies were highlighted. Attended by 50 international participants, this book is the outcome of the workshop held at ICRISAT-India during 27-30 September 1999 to mark the culmination of the Government of Japan/ICRISAT Project.

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2009 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Differences in Dry Matter Yield and the Uptake Distribution and Use of Nitrogen by Sorghum Genotypes written by Goncalo Evangelista de Franca and published by . This book was released on 1981 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fifty-four sorghum (Sorghum bicolor (L.) Moench) genotypes were screened for differential response to N by growing plants with 10 mg N/ plant in nutrient solution. The genotypes TX 3934 X GH-8-17, and SC 423 X SC 239 produced the highest amount of dry matter per unit N (H), and SC 110 X SC 120, and SC 150-6 X SC 150-9 (L) produced the low-est amount of dry matter per unit N. Because of this, these genotypes were selected for further study to identify physiological properties that may be associated with differential N nutrition. The physiological properties evaluated in these genotypes were: (1) NO3 uptake rates as affected by time (hours after being put in a new N03 solution), N03 concentration, and plant age; (2) dry matter and N accumulation with plant age;(3) N distribution among plant parts at various plant ages; (4) dry matter produced per unit N; (5) genotype responses to different N levels and N compounds. Differential responses to N were moted among the genotypes screened with low N. The ranges were 131% for dry matter yields, 75% for N contents, 59% for top N/root N ratios, and 34% for dry matter produced per unit N. After an initial slow rate of N03 uptake, N03 absorption was relatively rapid during the next four hours before leveling off or decreasing after six hours in plants 34 days of age or younger; plants older than this showed no differences in N03 uptake. Patterns of N03 uptake with time suggested that uptake was induced by N03 at low concentrations. Differences in N03 uptake rates among (...).

Download or read book Harvesting Plant and Microbial Biodiversity for Sustainably Enhanced Food Security written by Laurent Laplaze and published by Frontiers Media SA. This book was released on 2018-03-19 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: The World population will reach 9 billion by 2050, with the majority of this growth occurring in developing countries. On the other hand, one in nine of the World's population suffers from chronic hunger, the vast majority of which live in developing countries. We therefore need to find new and sustainable solutions to feed this increasing population and alleviate the predicted negative impact of global changes on crop production. This e-Book deals with new strategies to improve food security and livelihoods in rural communities, reduce vulnerability, increase resilience and mitigate lthe impact of climate change and land degradation on agriculture. This collection of 18 articles addresses the major abiotic factors limiting crop production worldwide, how to characterize and exploit the available plant biodiversity to increase production and sustainability in agrosystems, and the use of beneficial microbes to improve production and reduce the use of fertilizers and pesticides.

Download or read book Nutrient Use Efficiency in Plants written by Malcolm J. Hawkesford and published by Springer. This book was released on 2014-11-14 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nutrient Use Efficiency in Plants: Concepts and Approaches is the ninth volume in the Plant Ecophysiology series. It presents a broad overview of topics related to improvement of nutrient use efficiency of crops. Nutrient use efficiency (NUE) is a measure of how well plants use the available mineral nutrients. It can be defined as yield (biomass) per unit input (fertilizer, nutrient content). NUE is a complex trait: it depends on the ability to take up the nutrients from the soil, but also on transport, storage, mobilization, usage within the plant, and even on the environment. NUE is of particular interest as a major target for crop improvement. Improvement of NUE is an essential pre-requisite for expansion of crop production into marginal lands with low nutrient availability but also a way to reduce use of inorganic fertilizer.

Download or read book Molecular Approaches for the Genetic Improvement of Cereals for Stable Production in Water limited Environments written by Jean-Marcel Ribaut and published by CIMMYT. This book was released on 2000 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Plant Nutrition written by Walter Horst and published by Springer Science & Business Media. This book was released on 2006-05-18 with total page 1068 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is a compilation of extended abstracts of all papers presented at the 14th International Plant Nutrition Colloquium. Over 500 oral and poster presentations illustrate current knowledge and research emphasis in this subject, providing a comprehensive view of the state of plant nutrition research.

Download or read book Efficiency of Soil and Fertilizer Phosphorus Use written by John Keith Syers and published by Fao Fertilizer and Plant Nutri. This book was released on 2008 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: The efficient use of phosphorus (P) is essential to many agricultural and environmental issues. This bulletin reviews, analyses and synthesizes information on the efficient use of soil and fertilizer P. It presents information on the plant availability of soil and fertilizer P, with an emphasis on soil plant interactions. The focus is on the changing concepts of the behaviour of both soil and fertilizer P and on the need to define and assess their recovery and, thus, P-use efficiency more appropriately.