Interrelationship between grain yield and physiological parameters of winter wheat nitrogen nutrition efficiency

Genetika

关键词: breeding;    efficiency;    nitrogen nutrition;    parameters;    wheat;    grain yield;   

DOI  :  10.2298/GENSR1101091N

来源: DOAJ

【 摘 要 】

This paper deals with interrelationship between grain yield and somephysiological parameters of wheat plant nitrogen nutrition efficiency as wellas interrelationships between these parameters and some yield related traits(biological yield, grain harvest index). The aim of such investigation is toaffirm possibilities of using physiological parameters of wheat plantnitrogen nutrition efficiency as criterions in breeding on its grain yield.The investigation, conducted as three years field trials, included 30 wheatcultivars and perspective lines. There were studied: nitrogen content in theabove - ground part of plant at anthesis, in grain, in straw and totalnitrogen content at maturity, nitrogen harvest index, nitrogen reutilization,post - anthesis nitrogen accumulation and physiological efficiency ofnitrogen. The positive and statistically high significant relationshipsbetween nitrogen content in the above - ground part of plant at anthesis, ingrain and in straw, total nitrogen content at maturity, nitrogenreutilization and post - anthesis accumulation as physiological parametersand grain yield were registered in investigated material. Most of listedparameters, important by grain yield aspect, can be studied easily andmeasured before wheat vegetative period ends. The investigated parameters canbe recommended as criterions for selecting of parental pairs and evaluatingprogeny in breeding of wheat on grain yield, considering to their determinedinterrelationships and their measurability.

【 授权许可】

Unknown