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Forum Pasca Sarjana
Published by Institut Pertanian Bogor
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Core Subject : Education,
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Articles 2 Documents
 1 
Search results for , issue "Vol. 12 No. 1 (1989): Forum Pascasarjana" : 2 Documents clear
Pengaruh Penggenangan Pada Berbagai Fase Pertumbuhan Kedelai (Glycine Max (L.) Merr) Terhadap Pertumbuhan dan Produksi Bangun Tampubolon; Joedojono Wiroatmodjo; Justika S Baharsjah; . Soedarsono
Forum Pasca Sarjana Vol. 12 No. 1 (1989): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

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Abstract

The soybean (Glycine rnax (L.) Merr) plant is able to make morphological adaptations to flooding such as the formation of adventive roots. Long-term continuous flooding result in reductive conditions in the rhizosphere which is detrimental to plant growth. This experiment was conducted to investigate the influence of flooding at various stages of soybean development on growth and yield of the crop on Alluvial and Red Yellow Podsolic soils. Flooding invariably resulted in the reduction of the net assimilation rate and yield of soybean. Reduction depended on the time and duration of flooding. Flooding during active vegetative growth (PI), flowering-pod filling (P2), seed ripening (P3), active vegetative growth and flowering-pod filling (P4), active vegetative growth and seed ripening (PS), flowering-pod filling and seed ripening (P6), and active vegetative growth until seed ripening (P7) respectively resulted yield reductions of 20.42, 50.74, 9.43, 46.68, 30.28, 52.63 and 35.26% compared to the unflooded control. The number and dry weight of root nodules and nitrogen fixation rate were highest in the P4 and P7 treatments. Nodules were formed on the adventive roots, when the soybean plants were flooded.
Computation Technique to Estimate Recombination Value, With an Example Loci of MDH, Esterase and Hypocotyl Colour of Setaria italica Muhammad Jusuf
Forum Pasca Sarjana Vol. 12 No. 1 (1989): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (830.239 KB)

Abstract

Coefficient of recombination between two loci can be estimated from it's maximum likelihood function. Newton approximation method that was combined with computer programation can be used on that estimation. Application of this method to data of Setaria italica F2 population, showed recombination coefficient between Est-3 and MDH-I loci is 33.25 + 2.92% and between hypocotyl color and EST-2 loci is 10.21 + 3.25%.

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