Growth of mango (Mangifera indica L.) rootstocks as influenced by pre-sowing treatments

An experiment was carried out at Navsari Agricultural University, Navsari during 2014 to evaluate the effect of pre-sowing treatments on survival percentage and growth of mango rootstocks. Mango stones were soaked in aqueous solutions of GA3 (100 and 200 ppm), Beejamruth (2 % and 3 %) and Thiourea (1 % and 2 %) for 12 and 24 hours. The trial was evaluated in Completely Randomized Design based on factorial concept and the treatments were replicated thrice. Imposition of treatments led to significant differences at 5 % level of significance for all parameters chosen in this study. Mango stones when treated with Thiourea at 1 % had the maximum shoot length (49.93 cm), root length (34.38 cm), shoot dry weight (21.08 g) and total dry weight (26.36 g). The highest number of lateral roots (10.90) and survival percentage (64.17) was observed in mango stones dipped in 100 ppm GA3. Between the two soaking duration, soaking mango stones for 24 hours recorded higher values for shoot length (45.03 cm), root length (32.79 cm), number of lateral roots (9.83), survival percentage (62.72), shoot root fresh weight ratio (4.30), shoot dry weight (21.33 g), total dry weight (26.28 g) and shoot root dry weight ratio (4.32). Thus, survival percentage and growth of mango rootstocks can be substantially improved by soaking mango stones in aqueous solutions of 100 ppm GA3 or Thiourea at 1 % for 24 hours before sowing.

Download Full-text

Effect of Osmopriming of Boro Rice Seeds on Field Establishment of Seedlings

International Journal of Applied Sciences and Biotechnology ◽

10.3126/ijasbt.v1i4.9131 ◽

2013 ◽

Vol 1 (4) ◽

pp. 228-232 ◽

Cited By ~ 1

Author(s):

P. K. Roy ◽

M. A. R. Sarkar ◽

S. K. Paul ◽

A. Dey

Keyword(s):

Root Length ◽

Dry Weight ◽

Shoot Length ◽

Rice Seed ◽

Germination Time ◽

Root Dry Weight ◽

Shoot Dry Weight ◽

Vigor Index ◽

Mean Germination Time ◽

Germination Vigor

An experiment was conducted at the Seed Laboratory of the Department of Agronomy, Bangladesh Agricultural University, Mymensingh during the period from January to April 2012 to study the effect of osmopriming of Boro rice seed (cv. BRRI dhan29). Seeds were soaked in 1%, 3% and 5% solutions of ZnSO4, KCl and CaCl2 for 24 hours, respectively, with 30 hours incubation at 35°C temperature. Seed quality tests such as percent germination, mean germination time, vigor index, shoot length, root length, shoot dry weight and root dry weight of rice seedlings were measured for all treatments. Population m-2 was also calculated to investigate the field establishment of primed seeds. The highest germination, vigor index, population m-2, shoot length and shoot dry weight at 15 and 30 DAS, root length at 15 DAS, root dry weight at 15 and 30 DAS and the lowest mean germination time was observed from priming of seeds with 3% ZnSO4. Exceptionally, priming with 3% CaCl2 showed the highest root length at 30 DAS. On the contrary, 3% and 5% CaCl2 priming treatment showed the lowest germination, vigor index, population m-2, shoot length and shoot dry weight at 15 and 30 DAS, root length at 15 DAS, root dry weight at 15 and 30 DAS and the highest mean germination time. It can be concluded that rice seed (cv. BRRI dhan29) can be primed with 3% ZnSO4 solution for improving germination and field establishment of rice seedlings.DOI: http://dx.doi.org/10.3126/ijasbt.v1i4.9131 Int J Appl Sci Biotechnol, Vol. 1(4): 228-232

Download Full-text

Growth Effects of Uniconazole, Gibberellin, and Calcium on Salt Injuries of Hibiscus syriacus and H. hamabo seedlings

HortScience ◽

10.21273/hortsci.30.4.899d ◽

1995 ◽

Vol 30 (4) ◽

pp. 899D-899

Author(s):

Moo R. Huh ◽

Beyoung H. Kwack ◽

Leonard P. Perry

Keyword(s):

Root Length ◽

Weight Ratio ◽

Dry Weight ◽

Leaf Length ◽

Shoot Length ◽

Leaf Width ◽

Fresh Weight ◽

Crown Diameter ◽

Nacl Concentration ◽

Hibiscus Syriacus

Shoot length, leaf length and width, root length, and crown diameter were affected by 0.0-, 0.5-, 1.0-, and 5.0-mg·liter–1 uniconazole drench and 25- or 50-mg·liter–1 GA3 spray but not significantly by 0.0%, 2.5%, and 5.0% NaCl. Leaf width of H. syriacus Sieb. & Zucc. was not affected and that of H. syriacus L. significantly decreased, as NaCl concentration increased. Effect of NaCl on H. syriacus leaf width was offset by treatment with uniconazole but not by GA3 treatment. With 2.5% NaCl, dry weight of H. hamabo treated with uniconazole or GA3 increased and that of treated H. syriacus decreased. With 5.0% NaCl, dry weight of both species decreased with uniconazole or GA3. Calcium at 13.35 or 133.5 mM decreased the reduction of dry weight by NaCl treatment. The dry: fresh weight ratio of H. hamabo and H. syriacus treated with NaCl plus uniconazole was higher than that only treated with NaCl. GA3 treatment with NaCl did not affect the dry: fresh weight ratio for either species

Download Full-text

THE EFFECTS OF ABSCISIC ACID ON GROWTH AND DEVELOPMENT OF STAGE III ROOTING ARONIA ARBUTIFOLIA (ROSACEAE)

HortScience ◽

10.21273/hortsci.25.9.1137f ◽

1990 ◽

Vol 25 (9) ◽

pp. 1137f-1137

Author(s):

Wilfredo Colon ◽

Mike Kane ◽

Dewayne Ingram ◽

Hilton Biggs

Keyword(s):

Abscisic Acid ◽

Woody Plant ◽

Lateral Roots ◽

Leaf Tissue ◽

Dry Weight ◽

Shoot Length ◽

Root Primordia ◽

Woody Plant Medium ◽

Total Dry Weight ◽

Morphological Differences

Stage 2 micropropagules were transferred into woody plant medium supplemented with either 0, 0.1, 1, 10, 100 mg/L ABA (Abscisic acid) and with or without 1 mg/L IBA (Indole-3-butyric acid), Significant decreases in total dry weight and shoot length were observed at 1, 10 and 100 mg/L of ABA regardless of IBA concentration, Leaf area was significantly reduced in all treatments by increasing ABA levels. In the absence of IBA no callus formed but lateral roots developed. Another experiment using ABA levels of 0, 0.1, 0.5 and 0, 1 mg/L IBA was conducted. Total number of roots decreased with increasing ABA levels. Adventitious roots which formed on the stem and roots originating from root primordia were observed in all ABA levels with IBA, Callus did not form in the treatments lacking IBA. Scanning electron microscopy was used to document morphological differences due to ABA, Abscisic acid levels in leaf tissue were assayed using immunological techniques.

Download Full-text

Effect of nitrogen and plant growth regulators on seed yield per plant and seed quality parameters in brinjal (Solanum melongena L.)

Journal of Applied and Natural Science ◽

10.31018/jans.v9i4.1534 ◽

2017 ◽

Vol 9 (4) ◽

pp. 2338-2343

Author(s):

Arpana D. Vaja ◽

J. B. Patel ◽

R.N. Daki ◽

Shital A. Chauhan

Keyword(s):

Seed Yield ◽

Root Length ◽

Seed Quality ◽

Dry Weight ◽

Germination Percentage ◽

Quality Parameters ◽

Shoot Length ◽

Fresh Weight ◽

Shoot Dry Weight ◽

Vigour Index

The present investigation on effect of nitrogen [N0 (Control), N1 (50 kg N/ha), N2 (100 kg N/ha), and N3 (150 kg N/ ha)] and plant growth regulators [G0 (Control), G1 (50 ppm GA3), G2 (50 ppm NAA) and G3 (500 ppm Cycocel)] on seed yield per plant and seed quality parameters in brinjal (Solanum melongena L.) cv. GJB 3 was carried out at the Instructional Farm, Department of Agronomy, Junagadh Agricultural University, Junagadh during kharif 2015-16. The experiment was laid out in field as per randomized block design (Factorial) with three replications. The seed harvested from 16 different treatments combinations replicated thrice from the field were analyzed in the laboratory following completely randomized design (factorial) for various seed quality parameters. Application of nitrogen @ 150 kg N/ha recorded significantly (P<0.05) highest seed yield per plant, shoot fresh weight, root dry weight, shoot dry weight and vigour index – 2 (mass), while application of 100 kg N/ha resulted in significantly (P<0.05) highest germination percentage, root length, shoot length, root fresh weight and vigour index – 1 (length). Application of GA3 at 50 ppm recorded significantly the highest seed yield per plant, germination percentage, root length, shoot length, root fresh weight, shoot fresh weight, root dry weight, shoot dry weight, vigour index – 1 (length) and vigour index – 2 (mass). Among the 16 different treatment combinations, nitrogen @ 150 kg/ha and GA3 50 ppm noted the maximum seed yield per plant, shoot dry weight and vigour index – 2 (mass), while significantly the maxi-mum germination percentage, root length, shoot length, root fresh weight, shoot fresh weight and vigour index – 1 (length) were registered in treatment combination nitrogen 100 kg N/ha and GA3 @ 50 ppm. Therefore, it is advised that application of 100-150 kg of N/ha as a nitrogenous fertilizer and spray GA3 @ 50 ppm (G1) at 45 days after transplanting helps in increasing the seed yield per plant and seed quality parameters in brinjal seed production.

Download Full-text

Adaptation Selection of Plants for Utilization in Phytoremediation of Soil Contaminated by Crude Oil

HAYATI Journal of Biosciences ◽

10.4308/hjb.27.1.45 ◽

2020 ◽

Vol 27 (1) ◽

pp. 45

Author(s):

Fadliah Salim ◽

Yadi Setiadi ◽

Didy Sopandie ◽

Mohamad Yani

Keyword(s):

Crude Oil ◽

Plant Height ◽

Contaminated Soil ◽

Root Length ◽

Dry Weight ◽

Shoot Dry Weight ◽

Shoot Ratio ◽

Root Shoot Ratio ◽

Number Of Leaves ◽

Total Dry Weight

The research on adaptation selection for utilization in phytoremediation of soil contaminated by crude oil using four type plants, such as Helianthus annuus, Paspalum conjugatum, Sorghum bicolor, and Tagetes erecta were conducted. The adaptability of four types of plants on crude oil contaminated soil at total petroleum hydrocarbon (TPH) level at 0, 3, and 6% were observed and evaluated to their morphological and anatomical responses. Parameters observed were vegetative growth of plants including growth precentage, plant height, number of leaves, root length, root dry weight, shoot dry weight, root/shoot ratio, total dry weight, and stomatal density for 9 weeks cultivation in screen house. The results show that increasing in TPH level caused in significant reductions on morphological of four plants, such as percentage of plant growth, plant height, number of leaves, root length, root dry weight, shoot dry weight, and total dry weight. In contrast, the increasing in TPH level caused to increasing in root/shoot ratio. The four types of plants studied were effective to be used as plants for phytoremediation of petroleum contaminated soil. The plants of P. conjugatum and S. bicolor are recommended as phytoremediators for further studies.

Download Full-text

Respons of wheat species to irrigation water salinity

Genetika ◽

10.2298/gensr1702435c ◽

2017 ◽

Vol 49 (2) ◽

pp. 435-444 ◽

Cited By ~ 1

Author(s):

Yalçın Coşkun ◽

İsmail Taş

Keyword(s):

Ploidy Level ◽

Irrigation Water ◽

Root Length ◽

Dry Weight ◽

Shoot Length ◽

Salinity Level ◽

Water Salinity ◽

Root Dry Weight ◽

Shoot Dry Weight ◽

Irrigation Water Salinity

This study was conducted to investigate the effects of different irrigation water salinity level on chromosomes and shoots of wheat with three different ploidy level (diploid, tetraploid and hexaploid). Greenhouse experiment revealed that irrigation water salinity level had significant effects on shoot dry weight, root dry weight, shoot length and root length (P<0.05). The effects of ploidy level and cultivar shoot dry weight and root dry weight were also found to be significant (P<0.05), but the effects on shoot length and root length were not significant (P>0.05). Negative effects of salinity on shoot and root were started at 8 dS m-1. Also hexaploid wheat was more tolerant then tetraploid and diploid wheat to salinity. It was not determined that possible effects of irrigation water salinity to structure of chromosomes with current equipment and methods. Cell divisions were normal, but decreasing cell division rates were observed with increasing irrigation water salinity levels.

Download Full-text

Differences in Seedling Growth of 23 Creeping Bentgrass Cultivars under Polyethylene Glycol-induced Drought Conditions

HortTechnology ◽

10.21273/horttech03990-18 ◽

2018 ◽

Vol 28 (3) ◽

pp. 327-331 ◽

Cited By ~ 3

Author(s):

Qi Zhang ◽

Liqi Yang ◽

Kevin Rue

Keyword(s):

Polyethylene Glycol ◽

Seedling Growth ◽

Root Length ◽

Crop Production ◽

Weight Ratio ◽

Specific Root Length ◽

Creeping Bentgrass ◽

Dry Weight ◽

Shoot Dry Weight ◽

Stress Damage

Drought is the most important abiotic stress in crop production including turfgrass management. Using drought tolerant plants can help minimize stress damage. In this study, 23 commercially available cultivars of creeping bentgrass (Agrostis stolonifera) were evaluated for their responses to drought stress that was induced by polyethylene glycol (PEG) 6000 in a hydroponic system during the seed germination and seedling growth stage. In such a system, water potential was adjusted to 0.0 (the control), −0.3, and −0.6 MPa to mimic the drought condition. The absolute water content (AWC), shoot dry weight (SDW), root dry weight (RDW), longest root length (LRL), specific root length (SRL), and root-to-shoot dry weight ratio (RSR) in the plants grown for 4 weeks in the treatment were determined. Results showed that SDW and LRL were unaffected by drought; however, RDW and RSR increased, whereas SRL and AWC were reduced under drought. Among the 23 creeping bentgrass cultivars evaluated, Independence and Crystal Bluelinks had a higher turfgrass performance index (TPI), which represented the number of times a cultivar ranked in the top statistical group across all parameters. The results suggest that ‘Independence’ and ‘Crystal Bluelinks’ may be more adapted to drought than the other cultivars at the seedling stage.

Download Full-text

Effects of salinity stress on chickpea (Cicer arietinum L.) landraces during early growth stage

International Journal of Scientific Reports ◽

10.18203/issn.2454-2156.intjscirep20173093 ◽

2017 ◽

Vol 3 (7) ◽

pp. 214 ◽

Cited By ~ 1

Author(s):

Seyoum Zawude ◽

Diriba Shanko

Keyword(s):

Salinity Stress ◽

Root Length ◽

Growth Stage ◽

Dry Weight ◽

Shoot Length ◽

Salt Tolerant ◽

Fresh Weight ◽

Shoot Fresh Weight ◽

Root Dry Weight ◽

Shoot Dry Weight

Background: Salinity is one of the most serious abiotic stresses for crop plant growth. Chickpea grows under a wide range of climatic conditions and highly sensitive to salt stress. To determine the most tolerant genotype to salinity stress, an experiment was done as factorial form under completely block design (CRD) with three replications.Methods: The experimental treatments were four NaCl salinity levels (0, 5dS/m, 10dS/m and 15dS/m) and five chickpea landraces (Dadi, Dido, Dida, Dimi and Soya). Results: Results indicated that significant was observed in root length, shoot length, shoot fresh weight, root fresh weight, shoot dry weight, root dry weight, seedling shoot and root reduction traits in stress conditions. Dimi, Dido and Dadi were showed that high reduction in root length, shoot length, root length, shoot fresh weight, root fresh weight, shoot dry weight, root dry weight, seedling root and shoot in salinity conditions, respectively. The ANOVA for landraces and their interaction was found to be highly significant at (p<0.001) and (p<0.05) with all parameters. Landraces Dimi, Dido and Dadi were found salt tolerant but Soya was highly salt sensitive during seedling growth stage. Shoot dry weight had the most positive and significant correlation with root dry weight (r =0.987**). Seedling shoot reduction depicted a negative and significant correlation with total dry matter (r =-0.734**).Conclusions: This study indicated that developing genetic variability by identifying salt tolerant landrace is one of the appropriate strategies used to overcome salinity problem in arid and semi-arid areas.

Download Full-text

ACCESSING POTENTIAL OF SEEDLING TRAITS FOR SCREENING OF WHEAT GENOTYPES UNDER DROUGHT CONDITIONS

Agrobiological Records ◽

10.47278/journal.abr/2021.003 ◽

2021 ◽

Vol 6 ◽

pp. 1-6

Keyword(s):

Root Length ◽

Wheat Yield ◽

Dry Weight ◽

Shoot Length ◽

Deep Soil ◽

Wheat Genotypes ◽

Seedling Traits ◽

Shoot Dry Weight ◽

Root And Shoot Length ◽

Drought Conditions

Drought stress causes considerable decrease in wheat yield especially in developing countries like Pakistan. In current study, seedling traits i.e., root length, shoot length, shoot fresh weight, shoot dry weight and root to shoot (length) ratio were selected to find their effectiveness in evaluating drought tolerance of wheat genotypes. It was found that different genotypes showed different response under normal and drought conditions as mean squares for genotypes were significant. When plant is exposed to stress, it tries to overcome the stress by adopting different strategies like extending root system to reach the deep soil water. Increase in stress causes reduction in both root and shoot length. Genotypes named Faisalabad-08, Sehar-06, 9633, 9507 and lasani-08 showed maximum and high root length under normal conditions but their root length decreased drastically when exposed to drought environment. Because of their behavior they are tagged as drought susceptible genotypes. Genotypes Chakwal-86, Ass-11, Manthar-2003, Miraj 2008, Chakwal-50, 9488, 9805, 9859, 9512 and 9637 showed high values for root length under drought condition and while comparing their performance under both the environments i.e., normal and drought, their root length decreased non-significantly. So these genotypes are tagged as drought tolerant genotypes.

Download Full-text

Gibberellins Regulate Lateral Root Development that is Associated with Auxin and Cell Wall Metabolisms in Cucumber

10.21203/rs.3.rs-105436/v1 ◽

2020 ◽

Author(s):

Bingbing Cai ◽

Ting Wang ◽

Hong Sun ◽

Cuimei Liu ◽

Jinfang Chu ◽

...

Keyword(s):

Cell Wall ◽

Lateral Roots ◽

Plant Stress ◽

Weight Ratio ◽

Dry Weight ◽

Dependent Manner ◽

Concentration Dependent Manner ◽

Lateral Root Development ◽

Functional Studies ◽

Shoot Dry Weight

Abstract Background: Cucumber is an economically important crop cultivated worldwide. However, it is susceptible to various stresses due to weak and shallow root systems, limiting its productivity. Lateral roots (LRs) are critical for plant stress tolerance and productivity. Increasing evidence showed that gibberellins (GAs) play important roles, positively or negatively, in LR development in many plants. Therefore, it is of great importance for cucumber production to study the role of GAs in LR development. Results: The application of various concentrations of GA3 and uniconazole, a GA biosynthesis inhibitor, on germinated cucumber seeds for 5 days showed that GAs regulated cucumber LR development in a concentration-dependent manner. 1 µM, 10 µM, 50 µM and 100 µM GA3 significantly increased secondary root length, tertiary root number and length. It is worthy note that 50 µM GA3 treatment showed strong effects in increasing root dry weight and the root/shoot dry weight ratio. Pairwise comparisons between GA3-treated roots and Control at 2, 3 and 5 days after germination (DAG) identified 417 down-regulated genes enriched for GA metabolism-related processes and 447 up-regulated genes enriched for cell wall metabolism-related processes in GA3-treated roots. Linear factorial modeling was also performed to systematically identify DEGs and a total of 3523 non-redundant DEGs were identified in our RNA-seq data. Of these, most of the genes involved in auxin and cell wall metabolisms were up-regulated in GA3-treated roots. Conclusions: GAs positively regulate LR development in cucumber putatively associated with enhanced IAA and cell wall metabolisms. Our findings not only shed light on LR regulation mediated by GA but also offer an important resource for functional studies of candidate genes putatively involved in the regulation of LR development in cucumber and other crops.

Download Full-text