A molecular marker and application of qtl loci for improving barley harvest index under low phosphorus conditions

Abstract

The invention provides a molecular marker for increasing barley harvest index QTL site under low phosphor condition and an application thereof. The molecular marker is Hvc316, a nucleotide sequence isshown as SEQ ID No:1, the molecular marker is positioned on barley 3H chromosome, and can accurately track the site for increasing a barley harvest index QTL under low phosphor condition, predicts the harvest index characteristic of the barley under the low phosphor condition, and is convenient for molecular design breeding with nutrient efficient utilization. The invention also provides the application of the molecular marker Hvc316 in barley high-yield nutrient efficient breeding. A method provided in the invention is capable of enhancing the accuracy of prediction of the barley harvest index under low phosphor condition, and is convenient for rapidly screening the barley variety or lines used for breeding for increasing the barley harvest index QTL under low phosphor condition, so thata seed selection process of the barley high-yield high-efficiency variety can be greatly accelerated.

Description

technical field [0001] The present invention relates to the fields of plant nutrition and barley molecular breeding, in particular, relates to a SSR molecular marker and its application for improving barley harvest index QTL locus Qhi.sau-3H closely linked under the condition of low phosphorus in soil. Background technique [0002] Barley (Hordeum vulgare L.) is one of the important cereal crops. It is planted all over the world and ranks fifth in the world's crop production. ten thousand mu. [0003] Phosphorus is an important guarantee for high-yield and high-quality crops, and its status in agricultural production is increasingly prominent. The low content of available phosphorus in the soil is one of the important factors that limit the increase of crop yield. According to reports, 30% to 40% of the cultivated land in the world is severely inhibited in crop yield due to soil phosphorus deficiency. In terms of agricultural production, in order to solve the problem of in...

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Problems solved by technology

However, the current research is limited to the mining potential of crop yield under general conditions, and there are few reports on the gene mining related to crop yield potential under different conditions, especially low phosphorus conditions.

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