Alteration of Wheat Source-Sink Relation by Nitrogen and Spikelet Removal

Hassan Heidari

Makale detayları

Alteration of Wheat Source-Sink Relation by Nitrogen and Spikelet Removal

Yazarlar:

Hassan Heidari

Yayıncı:

Tekirdag Namik Kemal University

Ana Başlıklar:

Agronomi

Dergi:

Tekirdağ Ziraat Fakültesi Dergisi Vol.20 Issue 4, pp.731-739

Belge Tipi:

Makale

Yayın Tarihi:

12/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001305448

pISSN:

1302-7050

Anahtar kelimeler:

Özet:

 The source and sink relationships determine the amount and distribution of biomass in plants. Field and laboratory experiments were conducted to study the effect of nitrogen rate and spikelet removal on seed yield and germination traits of wheat. The field experiment was conducted employing sink manipulation no spikelet removal and ½ spikelet removal and source manipulation nitrogen rate of 0, 75, and 150 kg ha-1. This study was performed as a factorial experiment in a randomized complete block design with three replications. Seeds obtained from the field experiment were subjected to determine the effect of the sink and source manipulation on seed germination traits in the laboratory experiment. Results showed that most traits under study were not affected by source and sink manipulation. Seed yield and seed weight were not affected by spikelet removal and varying nitrogen applications. Although some of the wheat spikelets have been removed, those plants have been able to maintain the number of seeds per spike and the weight of a single seed. The use of nitrogen at the spike emergence stage did not affect the seed yield of the Pishtaz cultivar. Nitrogen needed for the seeds could be compensated by the re-mobilization of nitrogen from various plant organs such as the stem. Nitrogen application of 150 kg ha-1 with the removal of ½ spikelets improved seed germination  and vigor comparing control no spikelet removal with no nitrogen application. Considering that seed yield and seed weight did not change under the influence of source and sink manipulation, it can be concluded that Pishtaz wheat is more sink-limited than source-limited.

 The source and sink relationships determine the amount and distribution of biomass in plants. Field and laboratory experiments were conducted to study the effect of nitrogen rate and spikelet removal on seed yield and germination traits of wheat. The field experiment was conducted employing sink manipulation no spikelet removal and ½ spikelet removal and source manipulation nitrogen rate of 0, 75, and 150 kg ha-1. This study was performed as a factorial experiment in a randomized complete block design with three replications. Seeds obtained from the field experiment were subjected to determine the effect of the sink and source manipulation on seed germination traits in the laboratory experiment. Results showed that most traits under study were not affected by source and sink manipulation. Seed yield and seed weight were not affected by spikelet removal and varying nitrogen applications. Although some of the wheat spikelets have been removed, those plants have been able to maintain the number of seeds per spike and the weight of a single seed. The use of nitrogen at the spike emergence stage did not affect the seed yield of the Pishtaz cultivar. Nitrogen needed for the seeds could be compensated by the re-mobilization of nitrogen from various plant organs such as the stem. Nitrogen application of 150 kg ha-1 with the removal of ½ spikelets improved seed germination  and vigor comparing control no spikelet removal with no nitrogen application. Considering that seed yield and seed weight did not change under the influence of source and sink manipulation, it can be concluded that Pishtaz wheat is more sink-limited than source-limited.

 The source and sink relationships determine the amount and distribution of biomass in plants. Field and laboratory experiments were conducted to study the effect of nitrogen rate and spikelet removal on seed yield and germination traits of wheat. The field experiment was conducted employing sink manipulation no spikelet removal and ½ spikelet removal and source manipulation nitrogen rate of 0, 75, and 150 kg ha-1. This study was performed as a factorial experiment in a randomized complete block design with three replications. Seeds obtained from the field experiment were subjected to determine the effect of the sink and source manipulation on seed germination traits in the laboratory experiment. Results showed that most traits under study were not affected by source and sink manipulation. Seed yield and seed weight were not affected by spikelet removal and varying nitrogen applications. Although some of the wheat spikelets have been removed, those plants have been able to maintain the number of seeds per spike and the weight of a single seed. The use of nitrogen at the spike emergence stage did not affect the seed yield of the Pishtaz cultivar. Nitrogen needed for the seeds could be compensated by the re-mobilization of nitrogen from various plant organs such as the stem. Nitrogen application of 150 kg ha-1 with the removal of ½ spikelets improved seed germination  and vigor comparing control no spikelet removal with no nitrogen application. Considering that seed yield and seed weight did not change under the influence of source and sink manipulation, it can be concluded that Pishtaz wheat is more sink-limited than source-limited.

 The source and sink relationships determine the amount and distribution of biomass in plants. Field and laboratory experiments were conducted to study the effect of nitrogen rate and spikelet removal on seed yield and germination traits of wheat. The field experiment was conducted employing sink manipulation no spikelet removal and ½ spikelet removal and source manipulation nitrogen rate of 0, 75, and 150 kg ha-1. This study was performed as a factorial experiment in a randomized complete block design with three replications. Seeds obtained from the field experiment were subjected to determine the effect of the sink and source manipulation on seed germination traits in the laboratory experiment. Results showed that most traits under study were not affected by source and sink manipulation. Seed yield and seed weight were not affected by spikelet removal and varying nitrogen applications. Although some of the wheat spikelets have been removed, those plants have been able to maintain the number of seeds per spike and the weight of a single seed. The use of nitrogen at the spike emergence stage did not affect the seed yield of the Pishtaz cultivar. Nitrogen needed for the seeds could be compensated by the re-mobilization of nitrogen from various plant organs such as the stem. Nitrogen application of 150 kg ha-1 with the removal of ½ spikelets improved seed germination  and vigor comparing control no spikelet removal with no nitrogen application. Considering that seed yield and seed weight did not change under the influence of source and sink manipulation, it can be concluded that Pishtaz wheat is more sink-limited than source-limited.

Makale detayları

Alteration of Wheat Source-Sink Relation by Nitrogen and Spikelet Removal

Yazarlar:

Hassan Heidari

Yayıncı:

Tekirdag Namik Kemal University

Ana Başlıklar:

Agronomi

Dergi:

Tekirdağ Ziraat Fakültesi Dergisi Vol.20 Issue 4, pp.731-739

Belge Tipi:

Makale

Yayın Tarihi:

12/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001305448

pISSN:

1302-7050

Biomass

Germination

Harvest index

Plant nutrition

Seed vigor

Triticum aestivum L.Triticum aestivum L.

Biomass

Germination

Harvest index

Plant nutrition

Seed vigor

Sayı

Makale detayları

Yazarlar: Hassan Heidari

Yayıncı: Tekirdag Namik Kemal University

Ana Başlıklar: Agronomi

Dergi: Tekirdağ Ziraat Fakültesi Dergisi Vol.20 Issue 4, pp.731-739

Belge Tipi: Makale

Yayın Tarihi: 12/2023

Belge Dili: İngilizce

Document ID (Org No.): 2001305448

pISSN: 1302-7050

Sayı

Yazarlar:

Hassan Heidari

Yayıncı:

Tekirdag Namik Kemal University

Ana Başlıklar:

Agronomi

Dergi:

Tekirdağ Ziraat Fakültesi Dergisi Vol.20 Issue 4, pp.731-739

Belge Tipi:

Makale

Yayın Tarihi:

12/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001305448

pISSN:

1302-7050