By Roger G. Petersen
This article offers statistical and biometrical strategies for designing, undertaking, studying and reading box experiments. It addresses an important examine subject matters in agriculture, together with agronomy, breeding and pasture trials; farming structures study; and intercropping study.
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Additional resources for Agricultural Field Experiments
Androgenic haploids: factors controlling development and its application in crop improvement. Curr Sci 89:1870–1878. Datta SK, Baisakh N, Ramanathan V, Narayanan KK. 2004. Transgenics in crop improvement. In: Jain HK, Kharkawal MC, editors. Plant breeding: Mendelian to molecular approaches. New Delhi: Narosa Publishers. p. 333–371. Datta SK, Potrykus I. 1989. Artificial seed in barley: Encapsulation of microspore derived embryos. Theor Appl Genet 77:820–824. Datta SK, Schmid J. 1996. Prospects of artificial seeds from microspore derived embryos of cereals.
Nevertheless, somaclonal variation mimics induced mutations and can be induced in both asexually propagated and seed-propagated plants. This still holds promise as a component of plant breeding, along with in vitro mutagenesis. Plant breeders may be convinced of the potential of this variation, if sufficient information is available about molecular understanding and there are reliable molecular markers for the identification—at an early stage of plant development—of hypervariable DNA (“hot spots” that cause some species or genotypes to be more prone to somatic recombination).
The albino plants are usually devoid of the 23S and 16S rRNA and have a deleted plastid genome with no rbcL gene (see review in Datta, 2005). Again, an optimal combination of the above-mentioned factors has been shown to reduce the albinism, resulting in high rate of green plant regeneration. Use of DH lines in genome breeding— Because DH lines are homozygous with no segregation in subsequent generations, they have been used in genetic studies involving identification and mapping of major genes/ QTL.
Agricultural Field Experiments by Roger G. Petersen