Nutrient mobilization and yield of soybean genotypes

Loberg, G. L.; Shibles, Richard; Green, D. E.; Hanway, J. J.

doi:10.1080/01904168409363283

Cited by 28 publications

(35 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nitrogen accumulated in vegetative tissues during fl owering and pod-expanding stages is translocated to seeds at seed-fi lling stage, and about 50% of the N required for seed protein synthesis derives from N mobilized in vegetative tissues (Hanway and Weber, 1971;Loberg et al, 1984;Warembourg and Fernandez, 1985;Shibles and Sundberg, 1998). At the seed-fi lling stage when N demand for seeds markedly increases, N in leaf is translocated to seeds, leading to a rapid decline in chlorophyll and Rubisco contents in leaf.…”

Section: Correlation Of Leaf Nitrogen Chlorophyll and Rubiscomentioning

confidence: 99%

Correlation of Leaf Nitrogen, Chlorophyll and Rubisco Contents with Photosynthesis in a Supernodulating Soybean Genotype Sakukei 4

Maekawa

Kokubun

2005

Plant Production Science

View full text Add to dashboard Cite

Section: Correlation Of Leaf Nitrogen Chlorophyll and Rubiscomentioning

confidence: 99%

Correlation of Leaf Nitrogen, Chlorophyll and Rubisco Contents with Photosynthesis in a Supernodulating Soybean Genotype Sakukei 4

Maekawa

Kokubun

2005

Plant Production Science

View full text Add to dashboard Cite

“…Loss of dry matter by a tissue does not necessarily im- For personal use only. Loberg et al (1984). 8A, B; Table 3).…”

Section: )mentioning

confidence: 99%

“…plants lose substantial quantities ofN as leaves decline in physiological activity and senesce over the final 3 or 4 wk of seed growth (Hanway and Weber 1971). This remobilization of N is affected by cultivar (Loberg et al 1984), rhizobial strain (Morris and Weaver 1983), nitrogen and moisture stress (Egli et al 1978;1983), photoperiod (Cure et al 1982) and sourcesink manipulation (Nelson et al 1984). Jeppson et al (1978) found that high harvest N index (proportion of N in seed relative to that in whole plant) was positiv-ely correlated with seed yield.…”

mentioning

confidence: 99%

EFFECTS OF SOIL NITRATE LEVEL ON NITROGEN DISTRIBUTION AND REMOBILIZATION IN FIELD-GROWN SOYBEANS (Glycine max (L.) Merr.)

Buttery¹

1986

Can. J. Plant Sci.

View full text Add to dashboard Cite

“…It appears that vacuoles of roots and leaves have very different 804'" export characteristics (Bell et al, 1990). Loss of 804"^ from leaves may be limited by slow vacuolar turnover of 804"^ in mature leaves (Bell et al, 1994).Similarly, mobilization of reduced sulfur compounds from leaves and other vegetative tissues to seed during seed filling may also pose a limitation to seed growth.Developing soybean seeds put a large demand on the plant's vegetative tissues for reduced N. Soybean mobilizes 66 to 19% of its vegetative N (Vasilas et al, 1995), and about half of the soybean seed's N seems derived from mobilized-N (Hanway and Weber, 1971;Loberg et al, 1984;Imsande and Edwards, 1988). Similarly, developing soybean seeds may require mobilized reduced-8 for protein production as well (Sunarpi and Anderson, 1997c;and Sexton et al, 1998a).…”

mentioning

confidence: 99%

“…Thirty to one hundred percent of the seed's N comes from mobilized N in soybean (Zeiher et aL, 1982;Egli et aL, 1983). Soybean seed-N is composed of approximately one-half mobilized N under normal field growth conditions (Hanway and 29 Weber, 1971;Loberg et al, 1984; Irasande and Edwards, 1988), whereas soybean mobilizes 66 to 79% of its vegetative-N (Vasilas et al, 1995).Because met and cys make up 90% of the S in most plants (AUaway and Thompson, 1966). and most N is in the amino form (Henry et aL, 1992;Marschner, 1995), one might speculate that vegetative-S storage and mobilization may be similar to that of N. As N is scavenged from protein in vegetative tissue (Feller et al, 1977;Peoples and Dalling, 1988), S-amino acids would likely be released and available for mobilization.…”

mentioning

confidence: 99%

Distribution and Mobilization of Sulfur during Soybean Reproduction

Naeve

Shibles

2005

Crop Science

View full text Add to dashboard Cite

This manuscript has been reproduced from the microfilm master. UMI films the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter face, while others may be from any type of computer printer.The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignment can adversely aflFect reproduction.In the unlikely event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion.Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand comer and continuing from left to right in equal sections with small overiaps. Each original is also photographed in one exposure and is included in reduced form at the back of the book.Photographs included in the original manuscript have been reproduced xerographically in this copy. Higher quality 6" x 9" black and white photographic prints are available for any photographs or illustrations appearing in this copy for an additional charge. Contact UMI directly to order. UMI GENERAL INTRODUCTION Dissertation OrganizationA discussion of results obtained from studies conducted on soybean sulfur metabolism is presented here as two manuscripts for the eventual submission for publication in Crop Science. A general introduction precedes these manuscripts giving a broad overview of plant sulfur metabolism, sulfur transpon, and soybean seed protein accumulation. A general conclusion chapter follows, summarizing findings of the two studies presented here.References cited in this dissertation are coalesced and listed at the end of the dissertation.The first manuscript paper discusses the distribution and mobilization of sulfur acquired by soybean during seed development, while the second takes up nitrogen and sulfur stress effects on mobilization of sulfur to developing soybean seed. RationaleSoybean seed is an important source of dietary protein for livestock and humans;however, soybean seed protein itself contains low, potentially growth-limiting concentrations of the sulfur-containing amino acids, methionine (met) and cysteine (cys), when used as the sole protein source for monogastric mammals. Methionine and cys are considered "essential amino acids" indicating that they cannot be synthesized de novo by monogastric mammals (Food and Agricultural Organization and World Health Organization, 1989). Methionine is the primary essential amino acid that is deficient in legume proteins (DeLumen et al., 1997), and soybean seed proteins contain about half of the met found in FAO's (Food and 2 Agricultural Organization) egg protein standard (Burton et al., 1982). This limitation reveals itself in high protein rations when the majority of the ingested protein is derived from soybean....

show abstract

Nutrient mobilization and yield of soybean genotypes

Cited by 28 publications

References 18 publications

Correlation of Leaf Nitrogen, Chlorophyll and Rubisco Contents with Photosynthesis in a Supernodulating Soybean Genotype Sakukei 4

Correlation of Leaf Nitrogen, Chlorophyll and Rubisco Contents with Photosynthesis in a Supernodulating Soybean Genotype Sakukei 4

EFFECTS OF SOIL NITRATE LEVEL ON NITROGEN DISTRIBUTION AND REMOBILIZATION IN FIELD-GROWN SOYBEANS (Glycine max (L.) Merr.)

Distribution and Mobilization of Sulfur during Soybean Reproduction

Contact Info

Product

Resources

About