Drought Stress in Maize Zea mays L

This book focuses on early germination, one of maize germplasm most important strategies for adapting to drought-induced stress.

Author: Muhammad Aslam

Publisher: Springer

ISBN: 9783319254425

Category: Science

Page: 74

View: 401

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This book focuses on early germination, one of maize germplasm most important strategies for adapting to drought-induced stress. Some genotypes have the ability to adapt by either reducing water losses or by increasing water uptake. Drought tolerance is also an adaptive strategy that enables crop plants to maintain their normal physiological processes and deliver higher economical yield despite drought stress. Several processes are involved in conferring drought tolerance in maize: the accumulation of osmolytes or antioxidants, plant growth regulators, stress proteins and water channel proteins, transcription factors and signal transduction pathways. Drought is one of the most detrimental forms of abiotic stress around the world and seriously limits the productivity of agricultural crops. Maize, one of the leading cereal crops in the world, is sensitive to drought stress. Maize harvests are affected by drought stress at different growth stages in different regions. Numerous events in the life of maize crops can be affected by drought stress: germination potential, seedling growth, seedling stand establishment, overall growth and development, pollen and silk development, anthesis silking interval, pollination, and embryo, endosperm and kernel development. Though every maize genotype has the ability to avoid or withstand drought stress, there is a concrete need to improve the level of adaptability to drought stress to address the global issue of food security. The most common biological strategies for improving drought stress resistance include screening available maize germplasm for drought tolerance, conventional breeding strategies, and marker-assisted and genomic-assisted breeding and development of transgenic maize. As a comprehensive understanding of the effects of drought stress, adaptive strategies and potential breeding tools is the prerequisite for any sound breeding plan, this brief addresses these aspects.

Maize Zea Mays L Under Drought Stress

This book also include the traits to be used as selection criteria for improvement against drought stress in maize.

Author: Muhammad Aslam

Publisher: LAP Lambert Academic Publishing

ISBN: 3659483095

Category:

Page: 84

View: 246

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Stresses create barriers in normal growth and developmental processes of plants. Plant life cycle is distorted variably depending upon severity of stress, type of stress and growth stage of plant. Among stresses drought is most severe regarding adverse effects to the agricultural crop productivity at Global level. Among cereals, maize is very important cereal due to multiple utilization for versatile purposes. Drought also affects the maize as it does with other crops so, there is dire need to recognize the effects of drought on maize in detail. This book is typically focusing on interference by drought in maize life cycle. Determination of possible effects on a plant enables the researcher to explore the resources to ameliorate the adverse effects of stress. Furthermore, recognition of plant traits to exploit in breeding, selection and screening of germplasm is also very critical stage in-order to identify suitable traits. This book also include the traits to be used as selection criteria for improvement against drought stress in maize.

Effect of Water Stress on Zea Mays Plant Grown Under the Greenhouse

Water stress is one of the major abiotic stress factors thatcan effect on maize(Zea mays L.)plant growth.

Author: Mohamad Huzaifi Bin Ahmad Asri

Publisher:

ISBN: OCLC:1127905273

Category: Bioprosess engineering

Page: 65

View: 367

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Water stress is one of the major abiotic stress factors thatcan effect on maize(Zea mays L.)plant growth. This study was focused on the effect of water stress on maize growth under greenhouse condition in Perlis, Malaysia. The experiment was conducted in the greenhouse at campus Jejawi Universiti Malaysia Perlis over the duration of 10 weeks from 7 January 2016 to 11 March 2017. The maize was grown under four different level of water stress which is Control (no stress), Treatment 1 (low), Treatment 2 (medium), and Treatment 3(severe). The maize plant was irrigated daily according to their different percentage of total available water (TAW). Control is 100% of TAW, Treatment 1 is 75% of TAW, Treatment 2 is 50% of TAW and Treatment 3 is25% of TAW. The main objective in this study is to determine the effect of water stress on maize growth. In control and different water stress condition, the morphological of maize growth also was measured such as height of maize plant, diameter of stem, number of leaves and area of leaves. At the end of this experiment, the responses of growth parameters to the different condition water stress wereanalyze using ANOVA.The results obtained indicated that for treatment in no stress condition is better compared to others treatment. The result shows the mean height of plant for no stress, mild, medium and severe stress is 141.33 cm, 120.00 cm, 89.33cm and 56.67 cm respectively. Besides, diameter of stem for each treatment also shows the no stress condition is better. It is proved by the mean diameter of stem for no stress, mild, medium and sever stress is 2.17 cm, 2.13 cm, 2.00 cm, and 1.67 cm respectively. Overall, the growth of maize shows more effective for maize grown under no stress and mild stress condition.