Methyl Jasmonate Inhibits Postharvest Sprouting of Radishes

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 458b-458
Author(s):  
Chien Y. Wang
Keyword(s):  
Weight Loss ◽  
Root Growth ◽  
Methyl Jasmonate ◽  
Raphanus Sativus ◽  
Secondary Effect

Treatment of topped radishes (Raphanus sativus L., cv. Cherry Belle) with methyl jasmonate was effective in inhibiting postharvest sprouting of new leaves and the growth of roots. Radishes were trimmed to 10-mm tops and dipped in various methyl jasmonate suspensions for 3 min. After storage at 15 °C for 7 days, the growths of new leaves were 26, 22, 7, 3, and 1 mm in 0, 10–5, 10–4, 10–3, or 2 × 10–3 M methyl jasmonate-treated radishes, respectively. The lengths of root growth were also reduced by methyl jasmonate particularly at higher concentrations. These treatments also substantially reduced weight loss possibly as a secondary effect. Fumigation with methyl jasmonate vapor in enclosed containers was also effective in inhibiting the sprouting of leaves and root growth, but to a lesser extent than dipping treatments. Radishes stored at 0 °C did not show any new growth of leaves or roots, and therefore were not affected by the methyl jasmonate treatments.

Cool storage and post-storage treatment of strawberry runners for summer planting

1974 ◽  
Vol 14 (66) ◽  
pp. 118
Author(s):  
CR Little ◽  
KH Kroon ◽  
RG Proctor
Keyword(s):  
Weight Loss ◽  
Root Growth ◽  
Treatment Duration ◽  
Fruit Yield ◽  
Cool Storage ◽  
Storage Treatment ◽  
Polyethylene Bags

Winter dug strawberry runners of the cultivar Red Gauntlet were stored in sealed or ventilated polyethylene bags at -2.2�C for 63 months. After storage and before planting, runners received post storage treatments at 256�C. Crown and root growth occurred where treatment duration at 25.6�C exceeded two days. This did not adversely affect vigour in the field after planting, but did reduce fruit yield in the autumn crop. Pre-storage benomyl dusting reduced mould infection after cool storage and before planting. Crown and root growth and weight loss was reduced where runners were contained in sealed polyethylene bags, and significantly higher fruit yield was subsequently obtained from these treatments.

scholarly journals Genetic diversity of VIR Raphanus sativus L. collections on aluminum tolerance

2020 ◽  
Vol 24 (6) ◽  
pp. 613-624
Author(s):  
A. B. Kurina ◽  
I. A. Kosareva ◽  
A. M. Artemyeva
Keyword(s):  
Genetic Diversity ◽  
Root Growth ◽  
Raphanus Sativus ◽  
Aluminum Tolerance ◽  
Soil Conditions ◽  
Acidic Soils ◽  
Aluminum Resistance ◽  
Aluminum Ions ◽  
Raphanus Sativus L ◽  
Small Radish

Radish and small radish (Raphanus sativus L.) are popular and widely cultivated root vegetables in the world, which occupy an important place in human nutrition. Edaphic stressors have a significant impact on their productivity and quality. The main factor determining the phytotoxicity of acidic soils is the increased concentration of mobile aluminum ions in the soil solution. The accumulation of aluminum in root tissues disrupts the processes of cell division, initiation and growth of the lateral roots, the supply of plants with minerals and water. The study of intraspecific variation in aluminum resistance of R. sativus is an important stage for the breeding of these crops. The purpose of this work was to study the genetic diversity of R. sativus crops including 109 accessions of small radish and radish of various ecological and geographical origin, belonging to 23 types, 14 varieties of European, Chinese and Japanese subspecies on aluminum tolerance. In the absence of a rapid assessment methodology specialized for the species studied, a method is used to assess the aluminum resistance of cereals using an eriochrome cyanine R dye, which is based on the recovery or absence of restoration of mitotic activity of the seedlings roots subjected to shock exposure to aluminum. The effect of various concentrations on the vital activity of plants was revealed: a 66-mM concentration of AlCl3 · 6Н2О had a weak toxic effect on R. sativus accessions slowing down root growth; 83 mM contributed to a large differentiation of the small radish accessions and to a lesser extent for radish; 99 mM inhibited further root growth in 13.0 % of small radish accessions and in 7.3 % of radish and had a highly damaging effect. AlCl3 · 6Н2О at a concentration of 99 mM allowed us to identify the most tolerant small radish and radish accessions that originate from countries with a wide distribution of acidic soils. In a result, it was possible to determine the intraspecific variability of small radish and radish plants in the early stages of vegetation and to identify genotypes that are contrasting in their resistance to aluminum. We recommend the AlCl3 · 6Н2О concentration of 83 mM for screening the aluminum resistance of small radish and 99 mM for radish. The modified method that we developed is proposed as a rapid diagnosis of aluminum tolerance for the screening of a wide range of R. sativus genotypes and a subsequent study of contrasting forms during a longer cultivation of plants in hydroponic culture (including elemental analysis of roots and shoots, contrasting in resistance of accessions) as well as reactions of plants in soil conditions.

scholarly journals The effect of temperature on growth and development of cultivars of radish (Raphanus sativus L. var. radicula Pers.) under summer conditions.

1978 ◽  
Vol 26 (1) ◽  
pp. 68-75
Author(s):  
M. Nieuwhof
Keyword(s):  
Root Growth ◽  
Raphanus Sativus ◽  
Dry Matter ◽  
Cultivar Differences ◽  
Effect Of Temperature ◽  
Root Weight ◽  
Matter Production ◽  
Raphanus Sativus L ◽  
Maximum Root ◽  
Selection Of

During 1977, seven cultivars and strains were sown in glasshouses at temperatures of 10, 14, 17, 20, 23 and 26 deg C and harvested at five dates. Maximum leaf and dry-matter production occurred at 20 and 23 deg C, and maximum root growth initially at 20 and 23 deg C, but later at 17 deg C. Cultivar differences in rate of leaf and root growth were observed, and cultivar X environment interactions were apparent for leaf and root growth under summer conditions. The overall order of cultivars for leaf and root weight was similar to that for plants grown under autumn conditions [see PBA 47, 5915]; hence it is suggested that selection of plants for growing in winter could be performed during the summer. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Methyl jasmonate effects on sugarbeet root responses to postharvest dehydration

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11623
Author(s):  
Fernando L. Finger ◽  
John D. Eide ◽  
Abbas M. Lafta ◽  
Mohamed F.R. Khan ◽  
Munevver Dogramaci ◽  
...  
Keyword(s):  
Weight Loss ◽  
Wound Healing ◽  
Methyl Jasmonate ◽  
Respiration Rate ◽  
Storage Conditions ◽  
Proline Accumulation ◽  
Root Weight ◽  
Proline Metabolism ◽  
Storage Losses ◽  
Meja Treatment

Background Sugarbeet (Beta vulgaris L.) roots are stored under conditions that cause roots to dehydrate, which increases postharvest losses. Although exogenous jasmonate applications can reduce drought stress in intact plants, their ability to alleviate the effects of dehydration in postharvest sugarbeet roots or other stored plant products is unknown. Research was conducted to determine whether jasmonate treatment could mitigate physiological responses to dehydration in postharvest sugarbeet roots. Methods Freshly harvested sugarbeet roots were treated with 10 µM methyl jasmonate (MeJA) or water and stored under dehydrating and non-dehydrating storage conditions. Changes in fresh weight, respiration rate, wound healing, leaf regrowth, and proline metabolism of treated roots were investigated throughout eight weeks in storage. Results Dehydrating storage conditions increased root weight loss, respiration rate, and proline accumulation and prevented leaf regrowth from the root crown. Under dehydrating conditions, MeJA treatment reduced root respiration rate, but only in severely dehydrated roots. MeJA treatment also hastened wound-healing, but only in the late stages of barrier formation. MeJA treatment did not impact root weight loss or proline accumulation under dehydrating conditions or leaf regrowth under non-dehydrating conditions. Both dehydration and MeJA treatment affected expression of genes involved in proline metabolism. In dehydrated roots, proline dehydrogenase expression declined 340-fold, suggesting that dehydration-induced proline accumulation was governed by reducing proline degradation. MeJA treatment altered proline biosynthetic and catabolic gene expression, with greatest effect in non-dehydrated roots. Overall, MeJA treatment alleviated physiological manifestations of dehydration stress in stored roots, although the beneficial effects were small. Postharvest jasmonate applications, therefore, are unlikely to significantly reduce dehydration-related storage losses in sugarbeet roots.

scholarly journals Irrigation Strategies for Greenhouse Tomato Production on Rockwool

HortScience ◽  
2008 ◽  
Vol 43 (2) ◽  
pp. 484-493 ◽  
Author(s):  
Uttam K. Saha ◽  
Athanasios P. Papadopoulos ◽  
Xiuming Hao ◽  
Shalin Khosla
Keyword(s):  
Weight Loss ◽  
Root Growth ◽  
Water Content ◽  
Water Use ◽  
Nutrient Solution ◽  
Irrigation Schedule ◽  
Marketable Yield ◽  
Tomato Crop ◽  
Tomato Production ◽  
Greenhouse Tomato

To address the concern that irrigation provides sufficient water to match the crop needs, while not impeding oxygen availability to the roots, we conducted an experiment to develop suitable irrigation schedule(s) for greenhouse tomato (Lycopersicon esculentum Mill.) on rockwool. The experimental treatments incorporated the electrical conductivity (EC) of the nutrient solution in the rockwool slab (slab-EC) along with the water content (WC) in the rockwool slab (slab-WC) as the irrigation decision-making variables. They were: slab-WC ≤ 70% or slab-EC ≥ 1.4× normal or more (T1), slab-WC ≤ 70% or slab-EC ≥ 1.7× normal or more (T2), slab-WC ≤ 80% or slab-EC ≥ 1.4× normal or more (T3), slab-WC ≤ 80% or slab-EC ≥ 1.7× normal or more (T4), and the combined weight loss (WL) 700 g or more (T5) and WL 500 g or more (T6), in which “normal” means the feed solution EC as recommended in the seasonal fertigation schedule for a spring–summer tomato crop. The data on early-season marketable yield, total seasonal marketable yield, and fruit grades indicated the superiority of treatments T1, T2, and T6 over T3, T4, and T5. Better root growth was observed with T1, T2, and T6 and this was also associated with minimized nutrient solution leaching; furthermore, these plants had an abundance of coarse and fine roots, higher photosynthesis and transpiration, higher marketable yield, and a higher water use efficiency. Our results thus established that irrigation based on either a slab water content 70% or less or a 500-g weight loss is the best strategy for rockwool-grown greenhouse tomatoes in the spring–summer season. A variation in slab-EC between 1.4 and 1.7× normal, at a slab-WC of 70% or less, would have no significant effect on root growth, water use, marketable yield, or fruit grades.

scholarly journals Methyl Jasmonate Affects Morphology, Number and Activity of Endoplasmic Reticulum Bodies in Raphanus sativus Root Cells

2014 ◽  
Vol 56 (1) ◽  
pp. 61-72 ◽  
Author(s):  
Maxime Gotté ◽  
Rajgourab Ghosh ◽  
Sophie Bernard ◽  
Eric Nguema-Ona ◽  
Maïté Vicré-Gibouin ◽  
...  
Keyword(s):  
Endoplasmic Reticulum ◽  
Methyl Jasmonate ◽  
Raphanus Sativus ◽  
Root Cells
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