Effect of plant growth regulators on growth, quality and yield of Dendrobium orchid under polyhouse

Chawla, S.L.; Bhatt, Dipal; Shah, H.P.; Patel, MG; Patil, Sudha

doi:10.5958/2249-880x.2020.00013.4

Cited by 4 publications

(5 citation statements)

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“…Similarly, maximum weight of flower (3.77 gm) was recorded in T6 (GA3@250ppm) which was found statistically significant (p<0.05) to control and T2 (GA3@50ppm), while minimum weight of flower (2.86 gm) was recorded in control plants. The plants receiving gibberellic acid in an optimum proportion could be with better flower quality due to increase in size of meristematic region, enhanced cell division and enlargement, promotion of protein synthesis along with higher dry matter (Dalal et al, 2009a;Kasturi and Shekhar, 2017). The mechanism by which gibberellins might stimulate cell elongation is that the hydrolysis of starch resulting from the production of GA3 increased mobilization of starch in cotyledons by increasing amylase activity (Kaur et al, 2000).…”

Section: Resultsmentioning

confidence: 99%

Effect of foliar application of gibberellic acid (GA3) on quality attributes of calendula flowers (Calendula officinalis) cv. Gitana Fiesta in Chitwan, Nepal

Shrestha¹,

Karki²,

Shrestha³

2020

J. Agric. Sci. Pract.

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An experiment was conducted to study the effect of gibberellic acid (GA3) on quality attributes of calendula (Calendula officinalis L.). Single factorial experiment based on completely randomized design including 7 treatments and 3 replications was carried out. The treatments used were different concentrations of GA3 (0, 50, 100,150, 200, 250 and 300 ppm). Results showed that foliar application of GA3 had positive effect on quality of calendula flowers. First bud initiation and first flowering were recorded significantly earlier (p<0.05) if plants were sprayed with T5 (GA3@200ppm) treatment. Similarly, the study showed that the maximum flower diameter (6.43 cm) was recorded in T6 (GA3@250ppm) which was significantly similar (p>0.05) to T5 (GA3@200ppm) treatment whereas minimum flower diameter (4.19 cm) was recorded in control. Significant differences (p<0.05) among treatments were recorded in weight of flower where maximum weight of flower (3.77 gm) was recorded in T6 (GA3@250ppm), while minimum weight of flower (2.86 gm) was recorded in control plants. These results suggest that GA3 of dose 200 ppm to 250 ppm was ideal for enhancing the quality of flowers in calendula.

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Section: Resultsmentioning

confidence: 99%

Effect of foliar application of gibberellic acid (GA3) on quality attributes of calendula flowers (Calendula officinalis) cv. Gitana Fiesta in Chitwan, Nepal

Shrestha¹,

Karki²,

Shrestha³

2020

J. Agric. Sci. Pract.

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“…Crop Science (Barman et al, 2014;Chawla et al, 2020;Criley, 1997), shoot length (Bhatt & Chauhan, 2012), number of leaves per cane (Barman et al, 2014;Chawla et al, 2020), flowering (Bogahawatta & Kumara, 2017;Goh, 1979;Goh & Yang, 1978;Meesawat & Kanchanapoom, 2007;Naik & Ajithkumar, 2014;Nambiar et al, 2012;Yee, 1983), spike length (Barman et al, 2014;Chawla et al, 2020;Naik & Ajithkumar, 2014), flowers per inflorescence (Chawla et al, 2020), flower size (Abdullakasim et al, 2015;Nambiar et al, 2012), and number of inflorescences per plant (Barman et al, 2014;Bhatt & Chauhan, 2012;Chawla et al, 2020;Nambiar et al, 2012).…”

Section: Plant Growth Regulatorsmentioning

confidence: 99%

“…Further, photoperiod and low temperature have been shown to modify levels of endogenous hormones in different organs prior to flowering in Dendrobium (Campos & Kerbauy, 2004; Ferreira et al., 2006; Sarathum et al., 2010) indicating that endogenous hormones play an important role in regulating the flowering process (Zeevaart, 1976). Application of 6BAP, BA, CPPU, IAA, GA 3 , TDZ, ancymidol, flurprimidol, ethephon, and triacontanol, alone or combination, has been reported to affect seedling growth (Yee, 1983), plant height (Barman et al., 2014; Chawla et al., 2020; Criley, 1997), shoot length (Bhatt & Chauhan, 2012), number of leaves per cane (Barman et al., 2014; Chawla et al., 2020), flowering (Bogahawatta & Kumara, 2017; Goh, 1979; Goh & Yang, 1978; Meesawat & Kanchanapoom, 2007; Naik & Ajithkumar, 2014; Nambiar et al., 2012; Yee, 1983), spike length (Barman et al., 2014; Chawla et al., 2020; Naik & Ajithkumar, 2014), flowers per inflorescence (Chawla et al., 2020), flower size (Abdullakasim et al., 2015; Nambiar et al., 2012), and number of inflorescences per plant (Barman et al., 2014; Bhatt & Chauhan, 2012; Chawla et al., 2020; Nambiar et al., 2012).…”

Section: Cultural Practicesmentioning

confidence: 99%

The Dendrobium Orchid: Botany, horticulture, and utilization

Ketsa

Warrington

2023

Crop Science

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Dendrobium, one of the largest genera of tropical orchids, is grown commercially on a large scale with an important economic impact in several ASEAN countries.Dendrobium orchids can be grown in a wide range of climates, but flower production is best under tropical conditions. Due to being the most popular orchid for cut flower production, many hybrids of Dendrobium have been produced with colorful and attractive blooms. Cut flowers of Dendrobium are popular worldwide. In addition, many Dendrobium cultivars can be grown as flowering potted plants and for other purposes such as in medicinal applications and for use in decorative products. Postharvest physiology and technology are important in maintaining the quality of both cut flowers and potted plants from production sites to the marketplace. Plants of the Dendrobium genus also contain a wide diversity of bioactive compounds that can be developed into medicinal and cosmetic products. This review describes the botany, cultivation, postharvest physiology, handling and utilization of Dendrobium.

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“…Rooftile pieces with (T4) coir and Granite as well as (T3) coir and charcoal were next best in performance. Arumugam and Jawaharlal (2004) revealed that coconut fiber as a growing media increase, number of shoots per plant, early flowering, spike length and number of florets per spike followed by tile bits in Dendrobium orchid cv. Sonia-17.…”

Section: Initiation Of New Tillersmentioning

confidence: 99%

Identifying a Most Suitable Growing Medium for Acclimatizing Dendrobium Orchids for Commercial Purposes

2023

IJFMR

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Dendrobium orchid highly valued as cut flowers. During acclimatization different growing media are being used. However, these media have not scientifically tested, thus, the effect of growing media on acclimatization stage of Dendrobium orchid type ‘TC 05’ was evaluated under glass house conditions to assist in producing quality pot plants. The experiment was carried out at the Orchid Section of the Floriculture Research and Development Unit (FRDU), Department of National Botanic Gardens (DNBG), Peradeniya, Sri Lanka. Six months old tissue cultured Dendrobium plants with an average mean height of 2.4 cm were potted in 12.7 cm clay pots and five different potting media were tested. Fifteen pots were used for each treatment with 05 plants in each pot (total number of plants in each treatment = pots 15 x 5 plants = 75 plants) with the total number of plants 5 x 15 x 5 = 375 plants. Five different potting media were (T1) Coir dust+ Roof tile pieces + Sand (1:1:1), (T2) Coir dust + Granite + Sand (1:1:1), (T3) Coir dust + Roof tile pieces + Charcoal (1:1:1), (T4) Coir dust + Roof tile pieces + Granite (1:1:1), and (T5) Coir dust + Charcoal + Paddy husk (1:1:1) were used in the experiment. The experiment was arranged according to the Randomized Complete Block Design. The T1 medium Coir dust+ Roof tile pieces + Sand (1:1:1), which is regularly used as the growing media of the FRDU of the DNBG, was considered to be the control treatment. Observation on growth parameters (height, number of new leaves and number of new tillers) of plants were recorded twice a month from October 2022 to June 2023. Mean height of plants in treatment two is (6.4 ± 0.58) significantly higher than those of T3, T4 and T5 (F=5.7, P<0.01). Similarly mean number of new leaves in treatment two (5.2 ± 0.69) is significantly higher than those of T3, T4 and T5 (F=25.72, P<0.01). However, mean number of tiller in treatment two (1.9 ± 0.35) is significantly higher than that of T5 ( F=4.3, P<0.01). Thus growing media (T2) Coir dust + Granite + Sand (1:1:1) showed the best performance in average plant height, number of leaves produced and number of tillers. It may be concluded that Coir dust + Granite + Sand (1:1:1) is the most suitable media for the acclimatization stage (6 to 14 months plants after tissue culture) of Dendrobium verity ‘TC 05’ under local climatic condition in a glass house with 70% shade.

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Effect of plant growth regulators on growth, quality and yield of Dendrobium orchid under polyhouse

Cited by 4 publications

References 0 publications

Effect of foliar application of gibberellic acid (GA3) on quality attributes of calendula flowers (Calendula officinalis) cv. Gitana Fiesta in Chitwan, Nepal

Effect of foliar application of gibberellic acid (GA3) on quality attributes of calendula flowers (Calendula officinalis) cv. Gitana Fiesta in Chitwan, Nepal

The Dendrobium Orchid: Botany, horticulture, and utilization

Identifying a Most Suitable Growing Medium for Acclimatizing Dendrobium Orchids for Commercial Purposes

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