Dormancy and after-ripening response of seeds from natural populations and conserved Physaria (syn. Lesquerella) germplasm and their association with environmental and plant parameters

Cruz, Von Mark V.; Walters, Christina; Dierig, David A.

doi:10.1016/j.indcrop.2012.12.018

Cited by 11 publications

(3 citation statements)

References 54 publications

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“…Periode after-ripening menurut Sadjad (1994) adalah lamanya (minggu atau bulan) benih dalam keadaan dorman sejak dipanen. Periode ini diperlukan untuk memungkinkan embrio benih mengatasi dormansi selama proses perkembangan (Cruz et al (2013). Carrera et al (2008) menyatakan terdapat periode afer-ripening dalam penyimpanan kering benih yang baru dipanen, dan proses ini sangat penting dalam pematahan dormansi untuk mendorong perkecambahan benih.…”

Section: Pendahuluanunclassified

Ultrafine bubble water Pengaruhnya dalam Pematahan Dormansi Benih Padi

Iswara¹,

Setiawan²,

Palupi³

et al. 2019

j. penelit. pertan. tanam. pangan

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Rice seed has physiological dormancy and an after-ripening phase. Seed dormancy causes seed does not germinate, even though seeds are s upported by favorable c onditions for germination. Breaking rice seed dormancy could be carried out by high-temperature during storage and by scarification with KNO 3. The development of nano bubbles technology in the form of Ultrafine bubble water technology has the potential to break seed dormancy. Until now there is no information available on the use of fine bubbles water technology for breaking rice seed dormancy. This study aims to determine the effect of Ultrafine bubbles water on the breaking down of rice seed dormancy. The experiment used a completely randomized design (CRD) with 4 replications. Data were analyzed using (ANOVA). The average difference not the means were tested using Duncan's Multiple Range Test (DMRT) at 5% level. The treatments consisted of no immersion (control), soaking in aquades for 24 hours, in aquades for 48 hours, KNO 3 for 24 hours, KNO3 for 48 hours, Ultrafine bubbles water (UFB) for 24 hours, Ultrafine bubbles water (UFB) for 48 hours, Ultrafine bubbles water with oxygen injection (UFB20) for 24 hours, and Ultrafine bubbles water with oxygen injection (UFB20) for 48 hours. Results showed that the content of abscisic acid (ABA) of seed in UFB water immersion for 48 hours was 8.9 ppm. The lower of ABA content in rice seeds, the faster the germination process. The maximum growth potential (PTM) of seeds soaked UFB for 48 hours is 88%. Soaking seed in UFB water for 48 hours showed the Radicle Emergence (RE) percentage of 87%, indicating the prospected root that was grow during germination. The result of this study can be concluded that soaking rice seed in the Ultrafine bubbles water can be used as an alternative to break the dormancy in rice seeds.

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Section: Pendahuluanunclassified

Ultrafine bubble water Pengaruhnya dalam Pematahan Dormansi Benih Padi

Iswara¹,

Setiawan²,

Palupi³

et al. 2019

j. penelit. pertan. tanam. pangan

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“…When translated into seed-oil content, this is equivalent to an increase of 8-12 % in the improved germplasm. The latest lesquerella lines that were developed have more than 33 % seed oil and a harvest index of up to 16.5, significantly higher and a tremendous improvement compared to 0.14 harvest index observed in unimproved germplasm [80]. Selection for materials with increased lesquerolic acid has also been successful with the release of WCL-LH1 having about 8.6 % increase in lesquerolic acid content in the seed oil [70].…”

Section: Major Breeding Achievements and Target Traitsmentioning

confidence: 99%

Germplasm Improvement to Develop Commercially Viable Lines of the New Oilseed Crop Lesquerella

Cruz

Dierig

2014

Handbook of Plant Breeding

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Lesquerella (Physaria fendleri) is a new oilseed crop that is being domesticated as an alternative crop for arid regions in the United States. As a member of the Brassica family, the species exhibits a high seed-oil content that can provide a source of hydroxy fatty acids for industrial use as source of bioenergy and by-products that can be utilized in livestock production. Germplasm evaluation and breeding activities on the crop have been done by the University of Arizona and the US Department of Agriculture (USDA). Lesquerella and other Physaria and Paysonia species have a substantial germplasm collection that is well characterized for phenotypic traits and oil profiles. There are several improved germplasm released by the USDA with higher oil content and seed yield, enhanced oil profile, abiotic stress tolerance, and harvest index which can be directly utilized for commercial production or used for crop improvement. Additional technologies that can aid breeding, such as molecular marker systems and genetic transformation systems, have been established. A few challenges remain to be surmounted for the crop to be commercialized. A continued concerted effort by public and private institutions may hasten the process of bringing this new crop to commercial production.

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“…The sand-clay mixture had a total bulk density of 0.97 ± 0.07 g/cm 3 equivalent to that observed from soils in the species' native habitat (Cruz et al, 2013a). The growth media was supplemented with dolomite lime (GrowMore, Gardena, CA) at ¼ tsp per pot since native populations of the species are found in alkaline soils (Dierig and Ray, 2009).…”

Section: Greenhouse Experiments To Compare Physaria and Paysoniamentioning

confidence: 99%