Evaluation of morphological characteristics in Venezuelan maize (Zea mays L.) genotypes under drought stress

Camacho, Rafael; Caraballo, D.F.

doi:10.1590/s0103-90161994000300012

Cited by 13 publications

(11 citation statements)

References 12 publications

(15 reference statements)

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“…Therefore, root growth at the seedling stage may, therefore, be useful in predicting root growth under drought stress at later growth stages. Camacho and Caraballo [35] also concluded that root dry mass was identified as the major criterion for selection of maize genotypes under drought conditions and this report again supports the higher drought tolerance level in inbred lines SRIKAR 3555 and TMMH 806. Significant lower dry matter yield was recorded by maize genotypes SRIKAR 3555 and TMMH 806.…”

Section: Maize Genotypes Srikar 3555 and Tmmh806supporting

confidence: 72%

Analysis of Water Stress in Different Varieties of Maize (Zea mays L.) at the Early Seedling Stage

Pawar¹,

Wagh²,

Sonune³

et al. 2020

BJI

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Maize (Zea mays L.) is a widely grown crop with a high rate of photosynthetic activity due to its C4 pathway leading to higher yields of grain and a potential for biomass. It is predominantly crosspollinated crop, a feature that has contributed to its wide morphological variability and geographical adaptability. Abiotic stress such as drought stress negatively affects plant growth and development. The present study was designed to investigate the effects of drought stress on the morphological and biochemical content of seven different maize varieties. Here we have tested 7 different varieties of maize from the Marathwada region of Maharshtra, India. One week old plants have been affected by drought stress. After one week of drought stress, the plants were subjected to various morphometric and biochemical tests. The results showed that water stress treatment significantly affects root length, shoot length and fresh biomass of seven different varieties, i.e. Pawar et al.; BJI, 24(1): 15-24, 2020; Article no.BJI.52998 16 TMMH 806, NMH 1008, DELTA 10V30, INDAM 1122, SRIKAR 3555, DKC 9141, SGA. Drought stress also had a negative impact on chlorophyll and proline content. Result further exhibited that based on drought tolerance index, variety SRIKAR 3555 could be ranked as drought tolerant and NMH 1008 as drought-sensitive, while remaining cultivator ranked as drought intermediates. Original Research Article

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Section: Maize Genotypes Srikar 3555 and Tmmh806supporting

confidence: 72%

Analysis of Water Stress in Different Varieties of Maize (Zea mays L.) at the Early Seedling Stage

Pawar¹,

Wagh²,

Sonune³

et al. 2020

BJI

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“…Over the years, some morphological characteristics such as phytomass, plant height, leaf area, number of leaves per plant, have been used to characterize crop growth (Nour & Weibel, 1978;Camacho & Caraballo, 1994;Doberman & Pampolino, 1995), being dry or fresh weight the criterion most commonly used to express the influence of the mineral nutrients on plant growth patterns (Bohm, 1979). Despite some problems, these measurements are favored by their low cost and easy determination.…”

Section: Introductionmentioning

confidence: 99%

“…Since positive correlations have been found between plant height and yield of maize genotypes (Camacho & Caraballo, 1994), this character, therefore, could be an important selection criterion in breeding programs. Despite of this, plant height has received little attention by plant breeders.…”

Section: Introductionmentioning

confidence: 99%

Vegetative growth of grain sorghum in response to phosphorus nutrition

Camacho

Malavolta

Guerrero-Alves

et al. 2002

Sci. agric. (Piracicaba, Braz.)

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Morphological variables such as phytomass, plant height, leaf area, number of leaves, have been used to express the influence of mineral nutrients on plant growth patterns, since the vegetative development responds, in general, favorably to fertilizer applications. This work evaluates the effect of P on both, some morphological characteristics and total [P] in the shoot of eight grain sorghum (Sorghum bicolor L. Moench) genotypes. Genetic materials were grown in nutrient solution under three concentrations of P (0; 0.5 and 1.0 mmol L-1). Plants were harvested 41 days after sowing, and leaf area per plant (LA), number of leaves (NL) per plant, root volume (RV), plant height (PH), root dry matter (RDM), shoot dry matter (SDM), total dry matter (TDM), RDM/SDM ratio, and total P concentration in shoot were determined. RDM/SDM was high for treatment P(0) and diminished about twice when P was added. Lack of applied P decreased the final NL and LA. Shoot [P] was positively correlated with solution [P], but the increase in P concentration in the nutrient solution from 0.5 to 1.0 mmol L-1 had a negative effect on growth. Both under deficiency and sufficiency conditions of P, Himeca-101 showed the best behavior in terms of RDM, SDM, TDM, RV, LA and NL. LA and PH were identified as the best indicators to predict dry matter yield of sorghum plants under P supply conditions.

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“…It has been determined that many factors affected the process of maize seed germination, individually but also in the interactions, but gained results referred to seed as a whole (Sabovljević et al, 2011). Stress agroecological conditions, such as drought, are some of factors affecting morphological and physiological traits of seed (Camacho et al, 1994). According to data obtained by Walles and Bressman (cit.…”

Section: Resultsmentioning

confidence: 99%

Effects of agroecological conditions and hybrid combinations on maize seed germination

et al. 2013

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Germination energy and seed germination of four maize combinations cultivated under different growing conditions were observed. Analysis of hybrid seed of four commercial combinations derived at the Maize Research Institute, Zemun Polje, grown in three locations, were done on the working sample of 4 x 100 seeds under laboratory conditions. The experimental data was processed for the mean and total variability (X and C.V.) for both seed traits and for each test variant. The total average values of germination energy and germination in the period of investigation amounted to 94.5% and 94.8%, respectively. The coefficient of variation for germination energy was 0.67%, while for germination it was 0.39%. In the five-year study, the hybrid combination ZP704 had the highest values of germination energy (95.9%) and total germination (96.3%).Test results indicate that coefficients of variations for both observed traits over years were low, which points out to homogeneity of the material. Significant effects of factors (hybrid and location) and their interaction on observed seed properties were established by the analysis of variance. Gained results indicate that all four hybrids had high level of expression of traits under changeable agroecological conditions, as well as, a great effect of factors (hybrid and location) on germination energy and seed germination.

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Evaluation of morphological characteristics in Venezuelan maize (Zea mays L.) genotypes under drought stress

Cited by 13 publications

References 12 publications

Analysis of Water Stress in Different Varieties of Maize (Zea mays L.) at the Early Seedling Stage

Analysis of Water Stress in Different Varieties of Maize (Zea mays L.) at the Early Seedling Stage

Vegetative growth of grain sorghum in response to phosphorus nutrition

Effects of agroecological conditions and hybrid combinations on maize seed germination

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