Brassinosteroids improve quality of table grapes (Vitis vinifera L.) cv. flame seedless

Abstract

Significance of preharvest foliar sprays of brassinosteroid (BRs) on physicochemical properties and postharvest life of table grape cv. Flame Seedless were studied. The experiment was performed on 12-year old own rooted, grapevines planted at 3m x 3m spacing trained on overhead system. Vines were treated with aqueous solutions of BRs (0.0, 0.1, 0.5 and 1.0 mg l -1 ) at pea stage and at veraison. After harvesting, clusters were divided into two lots in which one was subjected to initial quality evaluation, while the other was stored in cold room (3-4 o C, 90-95% RH) for evaluation of postharvest quality. Clusters treated with 0.5 and 1.0 mg l -1 BRs showed significant increase in cluster weight and breadth as well as berry weight, length and breadth. BRs, at the dose of 0.5 mg l -1 effectively reduced the rate of berry softening, maintained external colour, stabilized anthocyanins, increased total phenols along with reduced rate of degradation in TSS and TA during low temperature storage on the contrary to other two doses and the control. It also exhibited protective role against decay development. Preharvest foliar spray of 0.5 mg l -1 BRs could be an effective means of maintaining quality and extending postharvest life of grape cv. Flame Seedless during cold storage.

Effect of Post Shooting Bunch Spray of Chemicals on Bunch Characters and Yield of Banana (Musa paradisiaca L.) cv. Grand Naine

“…Similar results were revealed by Champa et al, (2015) in grapes and Cha Fang et al, (2004) in orange.…”

“…Similar results were revealed by Mulagund et al, (2015) in banana, Sugiyama andKuraishi (1989) and Cha Fang et al, (2004) in orange, Champa et al, (2015) and Bhat et al, (2011) in grapes and Gomes et al, (2006) in yellow passion fruit.…”

Pre-sowing Seed Treatment with 24-Epibrassinolide Ameliorates Pesticide Stress in Brassica juncea L. through the Modulation of Stress Markers

“…BRs have also been reported to increase the total phenol contents in Vitis vivifera L . (Champa et al, 2015) and in Cichorium endivia L . (Serna et al, 2013).…”

Improvement of Physical and Chemical Properties of Thompson Seedless Grapes (H4 Strain) by Application of Brassinolide and Gibberellic Acid

“…The positive effect of Brassinosteroids, (BRs) on improving physical and chemical properties of cluster and berries may be attributed to their major role on stimulating cell division and extension, flower bud differentiation, carbohydrate assimilation, photosynthesis, ethylene biosynthesis, nucleic acid and protein synthesis and ATP activity subsequently, improved vegetative growth, physiological status and directed trees to earlier harvest as well as increased fruit yield and quality (Sasse, 2003, Wang et al, 2004, Mussig, 2005, Gomes et al, 2006, Symons et al, 2006, Jegadeeswari et al, 2010Gabr et al, 2011, Harindra Champa et al,2014, Harindra Champa et al, 2015, Isci and Gokbayrak, 2015, Engin et al, 2015, Rajni et al, 2017, Asghari and Rezaei-Rad, 2018and Senthilkumar et al, 2018. Also, the positive effect of Brassinolide (blank), on reduce the compactness coefficient of clusters and improving physical and chemical properties of cluster and berries may be attributed to it content (nitrogeen 8% and phosphour 20%).…”

“…Brassinosteroids (BRs) catalyzes cell division and elongation, flower bud differentiation, carbohydrate stimulates and ATP activity subsequently, enhancing physiological status of plant, improving vegetative growth and directing trees to earlier harvest as well as increasing fruit yield and quality (Wang et al, 2004, Mussig, 2005, Gomes et al, 2006, Symons et al, 2006, Jegadeeswari et al, 2010, Gabr et al, 2011, Harindra Champa et al, 2014, Engin et al, 2015, Harindra Champa et al, 2015, Isci & Gokbayrak, 2015, Rajni et al, 2017, Asghari & Rezaei-Rad, 2018and Senthilkumar et al, 2018. Being a growth promoter, Brassinosteroids (BRs) act synergistically and in an independent manner with auxins (Taiz and Zeiger, 2010) hence, it positively effects on important economically properties of berry.…”