A comparative analysis of the agronomic characteristics and economic benefits of using certified seed and farmer saved seed of rice (Oryza sativa L.) at different nutrient management regimes: Evidence from on-farm testing in the Guinea Savanna rice growing ecologies of Ghana

Genetic structure of five populations of a locally common rice (Oryza sativa L.) landrace Jaulia from parts of Uttarakhand state of India was studied using sequence tagged microsatellite site (STMS) markers. Of these, four populations were on-farm managed, assembled from different niche environments, and one population was conserved ex situ and represented static conservation. The 16 STMS primer pairs fully differentiated the inter- and intrapopulation diversity. A total of 72 alleles were recorded with a mean of 4.5 alleles per locus. Population wise, the total number of alleles ranged from 21 to 41, with maximum number of alleles for population IC 548358 and minimum number of alleles for population IC 100051 representing static conservation. A greater number of alleles specific to populations under farmer management could be recorded. Changes in yield parameters also seemed to be affected under farmer management besides other environmental adaptations for qualitative morphological characters. The marker diversity using STMS primer pairs indicates the genetic differentiation among populations resulting from joint effects of several evolutionary forces operating within the historical and biological context of the crop landrace. The variations in adaptations, on the other hand, indicate the degree to which populations are adapted to their environments and their potential for continued performance or as donors of characters in plant breeding. Both biotic and abiotic aspects of the environment are involved.

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Extraction of phenolic compounds and anthocyanin from black and purple rice bran (Oryza sativa L.) using ultrasound: A comparative analysis and phytochemical profiling

Industrial Crops and Products ◽

10.1016/j.indcrop.2016.10.041 ◽

2017 ◽

Vol 95 ◽

pp. 332-341 ◽

Cited By ~ 34

Author(s):

Amit Baran Das ◽

Vaibhav V. Goud ◽

Chandan Das

Keyword(s):

Oryza Sativa ◽

Comparative Analysis ◽

Phenolic Compounds ◽

Rice Bran ◽

Oryza Sativa L

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Organic Fertilizer Titonia Plus and Micro Nutrients Improved Rice (Oryza sativa L.) Production in Koto Panjang and Koto Tingga, Padang City, West Sumatera, Indonesia

Journal of Tropical Crop Science ◽

10.29244/jtcs.7.01.22-27 ◽

2020 ◽

Vol 7 (01) ◽

pp. 22-27

Author(s):

Nalwida Rozen ◽

Gusnidar Gusnidar ◽

Nurhajati Hakim

Keyword(s):

Oryza Sativa ◽

Grain Yield ◽

Oryza Sativa L ◽

Block Design ◽

Organic Fertilizer ◽

Chemical Fertilizer ◽

Rice Grain ◽

Randomized Block Design ◽

On Farm

A series of on-farm fi eld experiments were conducted in two locations in Padang, Koto Panjang and Koto Tingga, West Sumatera, Indonesia in 2015. The purpose of the experiment was to establish the formula of organic fertilizer derived from Tithonia supplied with micro nutrients, Zn and Mn, on rice. The experiments were conducted using completely-randomized block design with six treatments and three replications. The treatments were P = Tithonia Organic Fertilizer Plus (TOFP) + 3.0 kg Mn.ha-1, Q = TOFP + 3.0 kg Mn.ha-1+ 3.0 kg Zn.ha-1, R = TOFP + 4.5 kg Mn.ha-1 + 6 kg Zn.ha-1, S= TOFP + 4.5 kg Mn.ha-1+ 9 kg Zn.ha-1, T = TOFP only, U = 100% chemical fertilizer only. Treatment with micro nutrients as addition to TOFP (TOFP+ 3.0 kg Mn.ha-1 and TOFP+ 3.0 kg Mn.ha-1+3.0 kg Zn.ha-1) increased rice grain yield by 80 g per clump.

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