Method for initially selecting Al-tolerant rice varieties based on the charge characteristics of their roots

Lu, Hailong; Hua, H.; Zhao, Wenrui; Li, Jiu-yu; Xu, Ren-kou

doi:10.1016/j.ecoenv.2019.109813

Cited by 20 publications

(17 citation statements)

References 70 publications

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“…All of the lines tested had shorter root lengths in the 40 ppm Al treatment than in the control treatment (0 ppm Al) (Table 11). Similar results were reported by Hermanasari et al (2021) and Lu et al (2020). Inhibition of root elongation is a clear, direct symptom and can be immediately observed in plants under aluminum stress (Lu et al 2020).…”

supporting

confidence: 88%

Selection of upland rice lines in advanced yield trials and response to abiotic stress

et al. 2021

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Abstract. Tirtana A, Purwoko BP, Dewi IS, Trikoesoemaningtyas. 2021. Selection of upland rice lines in advanced yield trials and response to abiotic stress. Biodiversitas 22: 4694-4703. Breeding programs to obtain superior upland rice varieties with high productivity and adaptive in dryland must be prioritized to maximize the potential of dryland. This research aimed to obtain information on the agronomic performance of upland rice lines in advanced yield trials and select the best lines with high productivity and tolerance to drought stress and aluminum toxicity. Advanced yield trials were conducted from November 2016 until March 2017 in Bogor and Sukabumi using a randomized complete block design, where three replications were nested in the environments. Aluminum and drought stress evaluations were conducted at Muara Research Station, Bogor, in May-June 2018 and September-October 2018. Based on the selection index, twelve lines were selected with superior agronomic characters and high yield potential. These lines had characteristics as follows: days to harvesting (110.2-116.0 days), number of filled grains (70.6-101.3 grains), number of unfilled grains (27.9-58.4 grains), and productivity (2.2-2.9 tons ha-1). Evaluation of drought tolerance showed four lines with better drought tolerance than the drought-sensitive check IR20. The aluminum tolerance evaluation obtained two tolerant lines and nine lines with moderate responses to aluminum toxicity. The selected lines need to be further evaluated in multilocation trials.

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confidence: 88%

Selection of upland rice lines in advanced yield trials and response to abiotic stress

et al. 2021

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“…2d) in the same region (epidermis and cortex) of the root. Thus, one of the mechanisms that restrict root absorption of Al is Al-P complex, which produces a low solubility compound that precipitates in the P uptake zone (Yang et al 2011a, b;Lu et al 2020).…”

Section: Discussionmentioning

confidence: 99%

“…Although the cell wall has been recognized as the main target of Al toxicity (Horst et al 2010;Yang et al 2011a, b;Gao et al 2014;Sun et al 2016;Safari et al 2018), it is proposed that the Al immobilization in the cell wall can play an important role as an Al tolerance mechanism (Yang et al 2008;Kochian et al 2015). Since Al is in the root cell wall, it can be complexed with organic acids (Kopittke et al 2017) or Al can bind to phosphorus (Al-P) (Yang et al 2011a, b;dos Reis et al 2018;Lu et al 2020), preventing its entry in internal tissues.…”

Section: Introductionmentioning

confidence: 99%

Differential accumulation of aluminum in root tips of soybean seedlings

et al. 2020

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In the present study, we investigated the sites of aluminum (Al) accumulation and its effects on the growth, morphology and nutritional status in root tips of soybean (Glycine max L.) genotype Conquista. The seedlings were exposed to nutrient Clark solution, pH 4.0, with 0 (control) and 100 µM of Al for 24, 48 and 72 h. Our results showed an Al accumulation in the superficial layers of the root tip, such as the root cap cells, epidermis and cortex cells, and internally in the cell walls of the meristematic cells. The Al accumulation in the outer cells prevented the entry of this metal in the inner tissues. However, scanning electron micrographs showed damage in the external micromorphology of the root tips. This damage resulted in cellular disorganization in the root cap and epidermis cells leading to a reduction in Ca and Mg uptake. Despite that, there was no change in root growth. Taken together, our findings suggest that genotype Conquista has a capacity to avoid Al toxicity, probably by Al immobilization in the cell walls and in the external tissues of the root tip.

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“…Karakter panjang daun, panjang ruas, diaemeter batang, diameter batas ruas, panjang kuntum bunga dan jumlah spikelet tidak dipengaruhi oleh jenis tanah, hanya karakter tinggi tanaman pada tanah tidak masam lebih tinggi jika dibandingkan dengan tanah kering masam (Tabel 3). Tinggi tanaman yang lebih rendah pada tanah kering masam, diduga karena adanya pengaruh Al di dalam tanah kering masam terhadap tanaman, karena Al akan menghambat fungsi dan pertumbuhan akar sehingga akan menghambat pertumbuhan diatasnya, termasuk tinggi tanaman (Lu et al, 2020). Tinggi tanaman yang lebih rendah juga diduga karena pada tanah kering masam biasanya kekurangan nutrisi dan terjadi keracunan logam seperti Mn, Fe dan Al, sehingga akan menghambat pertumbuhan di tanah masam (Bose et al, 2015).…”

Section: Morfologi Dan Produktivitas Rumput Benggalaunclassified

“…Karakter umur bunting dan umur bunga sempurna pada tanah kering masam, lebih lama pada tanah kering masam jika dibandingkan pada tanah tidak masam. Rendahnya produksi pada tanah kering masam dipengaruhi oleh keberadaan Al yang terdapat pada tanah masam, keracunan Al akan mengakibatkan terhambatnya perkembangan dan pertumbuhan akar (Muhammad et al, 2018), mempengaruhi fotosintesis dan respirasi (Peixoto et al, 2002), sehingga akan mempengaruhi metabolisme tanaman dan pada akhirnya akan menurunkan hasil panen (Lu et al, 2020). Selain itu keracunan Al juga akan mengakibatkan terjadinya ketidak seimbangan penyerapan unsur hara, seperti Ca, Mg, P dan K (Olivares et al, 2009), ketidakseimbangan ini akan mengakibatkan produktivitas tanaman menjadi lebih rendah.…”

Section: Morfologi Dan Produktivitas Rumput Benggalaunclassified

Karakter Morfologi dan Produktivitas Kultivar Rumput Benggala (Panicum maximum) pada Tanah Kering Masam

Fanindi¹,

Sajimin²,

Sutedi³

2020

J. Agron. Indonesia

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Rumput benggala merupakan tanaman pakan ternak (TPT) yang banyak digunakan oleh peternak di Indonesia. Pengembangan budidaya TPT, selalu diarahkan pada lahan sub optimal. Salah satu lahan suboptimal yang luas keberadaannya adalah lahan kering masam. Tujuan penelitian ini adalah untuk melihat karakter morfologi dan produktivitas kultivar rumput benggala di tanah masam. Penelitian dilakukan di rumah kaca Balai Penelitian Ternak Ciawi, menggunakan 3 kultivar rumput benggala (kultivar Petrie, Gatton dan Natsuyutaka). Kultivar tersebut ditanam di 2 jenis tanah yaitu tanah masam dan tidak masam pada pot berdiameter 40 cm. Rancangan penelitian menggunakan rancangan acak lengkap, dengan 10 ulangan. Peubah yang diamati adalah karakter morfologi, umur berbunga, produksi biji dan produksi hijauan. Hasil penelitian menunjukan bahwa karakter morfologi seperti panjang dan, panjang ruas, diameter batang, panjang kuntum bunga lebih dipengaruhi oleh kultivar jika dibandingkan jenis tanah. Sedangkan produktivitas rumput lebih dipengaruhi jenis tanah, produktivitas tanaman menurun pada tanah masam jika dibandingkan di tanah tidak masam. Semua kultivar rumput benggala yang diuji produktivitasnya menurun pada tanah masam, menunjukkan bahwa ketiga kultivar yang diuji tidak toleran pada lahan masam. Sehingga perlu dilakukan kegiatan pemuliaan untuk memperoleh rumput benggala toleran masam. Kata kunci: produksi, suboptimal, tanaman pakan

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Method for initially selecting Al-tolerant rice varieties based on the charge characteristics of their roots

Cited by 20 publications

References 70 publications

Selection of upland rice lines in advanced yield trials and response to abiotic stress

Selection of upland rice lines in advanced yield trials and response to abiotic stress

Differential accumulation of aluminum in root tips of soybean seedlings

Karakter Morfologi dan Produktivitas Kultivar Rumput Benggala (Panicum maximum) pada Tanah Kering Masam

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