根深ネギの晩抽性遺伝資源，晩ネギの分げつ性に関する遺伝解析のため，はじめに14品種・系統を用いて分げつ数と諸形質の相関分析を行った．相関分析の結果より，‘分げつ数’は‘開花日’と有意な相関が見られず，分げつ性と晩抽性は独立して選抜できる可能性が示唆された．次に相関分析での‘分げつ数’の多少および‘開花日’の早晩について変異が大きくなるように6品種・系統を選定し，片側ダイアレル分析を実施した．解析集団は生育段階に応じて3回分げつ数を調査した．片側ダイアレル分散分析の結果，全調査回で相加効果を示すa項のF値がb項を大きく上回ったこと，平均優性度が1以下であったことから，分げつ数は相加効果が大きい不完全優性の形質であると推定された．また優性遺伝子の平均的作用方向は分げつ数の少ない方向と考えられた．3回の分げつ数調査およびダイアレル分析結果を比較すると，親系統の優性順序，親系統の優性および劣...

In order to study effects of nitrogen fertilization and cultivars on some of traits of different barley an experiment was conducted at Isfahan in 2012. The experimental was split plot in a randomized complete block design with three replications. In this experiment, different levels of nitrogen in the main plots included four levels (0, 50, 100 and 150 N kg/ha (urea)) and barley cultivars inclu...

In order to study effects of nitrogen fertilization and cultivars on some of traits of different barley an experiment was conducted at Isfahan in 2012. The experimental was split plot in a randomized complete block design with three replications. In this experiment, different levels of nitrogen in the main plots included four levels (0, 50, 100 and 150 N kg/ha (urea)) and barley cultivars inclu...

A new plant breeding method-the biotron breeding system (BBS)-can rapidly produce advanced generations in rice (Oryza sativa L.) breeding. This method uses a growth chamber (biotron) with CO2 control, accompanied by tiller removal and embryo rescue to decrease the period before seed maturity. However, tiller removal and embryo rescue are laborious and impractical for large populations. We inves...

Digestive enzymatic activity and nutritional responses of Autographa gamma (L.) (Lepidoptera: Noctuidae), an important insect pest of sugar beet, on nine sugar beet cultivars (Peritra, Karolina, Paolita, Lenzier, Tiller, Ardabili, Persia, Rozier, and Dorothea) were studied. The highest proteolytic activity of fourth and fifth instar of A. gamma was in larvae fed on cultivar Persia. The highest ...

The effect of high temperatures on harvest index (HI) and morphological components that contribute to HI was investigated in two lines (Bd21 and Bd21-3) of Brachypodium distachyon, a C3 grass recognized as a tractable plant, to address critical issues associated with enhancing cereal crop yields in the presence of global climate change. The results demonstrated that temperatures ≥32 °C eliminat...

A new mixed-model method was developed for mapping quantitative trait loci (QTL) by incorporating multiple polygenic covariance structures. First, we used genome-wide markers to calculate six different kinship matrices. We then partitioned the total genetic variance into six variance components, one corresponding to each kinship matrix, including the additive, dominance, additive × additive, do...

Soil compaction has a real effect on rice growth in the Mekong Delta. The correlation between soil and (tiller number plant height) paddy field An Giang province was evaluated 2020 Winter-Spring Summer-Autumn crops using Pearson's test. research results show that 0-20 cm from surface positive with tiller number, while height is non-significant. Therefore, prediction model for numbers constructe...