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作者自1975年起,陆续育成了五个二棱大麦的同源四倍体品系,即4n“8091”、4n“8093“、4n“早熟3号”,4n“Clipper”、4n“Betzes”。4n与相应的2n比较,植株矮10—20厘米,茎杆粗壮,机械组织发达,维管束大,抗倒力强;千粒重4n平均为53.08克,比2n平均为40.78克高32.26％;籽粒粗蛋白含量4n平均为14.75％,比2n的10.43％增长了41.46％,它是一个重要的高蛋白大麦品种资源。籽粒17种氨基含量,4n平均为11.03％,2n为8.03％,增高极显著。但4n结实率低,平均只有59.1％,比2n的94.21％低35.11％,这是同源四倍体大麦至今未能应用于生产的主要原因。作者经多年系统选择,4n“8C93”的结实率已提高到了75.8％,籽粒粗蛋白含量达15.37％,它是一个有前途的好品系。
The authors authored four tetraploid barley tetraploid tetraploid lines since 1975, ie 4n ”8091“, 4n ”8093“, 4n ”precocious 3“, 4n ”Clipper“, 4n ”Betzes“ . 4n compared with the corresponding 2n, the plant is 10-20 cm short, the stalk is sturdy, the mechanical tissue is well developed, the vascular bundle is large and the anti-dumping power is strong; the average grain weight of 4n is 53.08g, which is 32.26% higher than the average of 2n of 40.78g; The average protein content of 4n is 14.75%, which is 41.46% more than the 10.43% of 2n, which is an important high-protein barley variety resource. Seventeen kinds of amino content of grain, 4n average 11.03%, 2n 8.03%, increased significantly. However, the low seed setting rate of 4n was only 59.1% on average, 35.11% lower than 94.21% of 2n, which is the main reason why autotetraploid barley has not been applied to produce. After years of systematic selection, the seed setting rate of 4n ”8C93" has been increased to 75.8% and the crude protein content of grain reaches 15.37%. It is a promising good line.