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Titolo:
A COMPARISON OF THE DYNAMICS OF ROOT-GROWTH AND BIOMASS PARTITIONING IN WILD OAT (AVENA-FATUA L) AND SPRING WHEAT
Autore:
BINGHAM IJ;
Indirizzi:
SCOTTISH AGR COLL,DEPT CROP BIOL,581 KING ST ABERDEEN AB9 1UD SCOTLAND
Titolo Testata:
Weed Research
fascicolo: 1, volume: 35, anno: 1995,
pagine: 57 - 66
SICI:
0043-1737(1995)35:1<57:ACOTDO>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
LOLIUM-PERENNE L; COMPETITIVE ABILITY; TRITICUM-AESTIVUM; NITRATE; BARLEY; CEREALS; PLANTS; LIGHT; LINES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
32
Recensione:
Indirizzi per estratti:
Citazione:
I.J. Bingham, "A COMPARISON OF THE DYNAMICS OF ROOT-GROWTH AND BIOMASS PARTITIONING IN WILD OAT (AVENA-FATUA L) AND SPRING WHEAT", Weed Research, 35(1), 1995, pp. 57-66

Abstract

The dynamics of early root growth and dry matter partitioning were compared in spring wheat (Triticum aestivum L.) and wild oat (Avena fatua L.) grown in solution culture. Total root length was greater in wheat than wild oat throughout the experiment; a result of a greater number of seminal axes and greater production of lateral root length per axis. The final number of adventitious roots was greater in wheat than in wild oat, but their length was similar. Relative growth rates were also similar as was shoot:root dry weight ratio and rate of root respiration. However, wheat used the dry matter partitioned to its roots more efficiently, producing a greater specific root length (SRL, length per unit weight). Caution must be exercised when relating these resultsto plants growing and competing in the field, but three general points are raised. First, the initial number of seminal axes can have a profound effect on the rate of early root development; second, the adventitious root system of wild oat is not inherently more vigorous than that of wheat; and third, future studies should compare SRL of wheat andwild oat in the field. If differences similar to those in the presentstudy are found they may contribute to the greater competitive ability of wheat.

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Documento generato il 01/12/20 alle ore 06:59:02