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中晚熟蟠桃新品種中蟠104的選育

2024-04-30 09:34潘磊牛良孫世航段文宜崔國朝王志強曾文芳
果樹學報 2024年4期
關鍵詞:蟠桃新品種

潘磊 牛良 孫世航 段文宜 崔國朝 王志強 曾文芳

摘? ? 要:中蟠104是通過多代人工雜交聚合選育的中晚熟黃肉蟠桃新品種,其母本為晚熟黃肉桃優系‘06-3-137,父本為早熟黃肉蟠桃優株‘07北5-60?;樗N薇型,粉紅色花瓣,花瓣數5片,花粉多,自花結實,豐產穩產。在鄭州地區果實8月上旬成熟,果實生育期137 d左右。單果質量241 g,果實扁平,果頂閉合性好;果皮茸毛短,底色黃色,果面全紅;套袋后果面全黃;果肉黃色,硬溶質,黏核;肉質細膩,可溶性固形物含量(w)15.2%,風味甜香。

關鍵詞:蟠桃;新品種;中蟠104;黃肉;硬溶質;中晚熟

中圖分類號:S662.1 文獻標志碼:A 文章編號:1009-9980(2024)04-0777-04

Breeding report of a mid-late ripening yellow flat peach cultivar Zhongpan 104

PAN Lei, NIU Liang, SUN Shihang, DUAN Wenyi, CUI Guochao, WANG Zhiqiang, ZENG Wenfang*

(Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, Henan, China)

Abstract: Zhongpan 104 is a mid-late ripening yellow flesh peach released from the Peach Breeding Research Group of Zhengzhou Fruit Research Institute (ZFRI), Chinese Academy of Agricultural Sciences (CAAS). It was derived from a cross of 06-3-137 × 07 North 5-60 made in 2012. The female parent, 06-3-137, is a yellow-fleshed peach plant, which is late maturing and has a bright red skin, and the pollen parent, 07 North 5-60, is a yellow-fleshed flat peach, which is early-maturing and has a bright red skin. The progeny consisted of 148 seedlings. It was named Zhongpan 104 in 2021. The flowers of Zhongpan 104 were pink, showy and self-pollinating with a lot of pollen. The average full bloom date in Zhengzhou was late March, and the flowering period duration was 7 to 10 days. There was no significant difference in bloom date between Zhongpan 104 and Zhongtao Huangjinmi 5. The average harvest date was 8 Aug at Zhengzhou in the observational plots. Zhongpan 104 usually ripened 10 d earlier than Zhongtao Huangjinmi 5. Its fruit development period was 137 d. The fruit of Zhongpan 104 was flat round, and the sutures were symmetrical on both sides. Zhongpan 104 was a low-acid clingstone peach with yellow, hard-melting flesh that was crispy at early ripening and became soft when fully ripe. The average fruit weight was 241 grams, and the maximum weight was 389 grams. The pericarp had short hairs with bright red color. The fruit was sweet and juicy, and the soluble solid content was 15.2%. The flesh of the fruit is fine and clingstone. The leaves are yellowish green. The field trials were conducted in Xinzheng, Xinxiang and Jiaozuo in Henan Province. The fruit yield of each experimental station was relatively stable, ranging from 1898 to 2073 kg per 666.7 m2. flower and fruit thinning was necessary for ensuring the quality of the fruits. Generally, 2-3 fruits should be retained on the long fruit branch, 1 fruit should be retained on the short fruit branch. Cultivation with bagging should be suggested after spraying insecticides and fungicides at the young fruit stage to ensure high commercial rate of the fruits.

Key words: Flat peach; New cultivar; Zhongpan 104; Yellow flesh; Hard-melting; Middle to late ripening

桃是中國主要的落葉果樹之一,中國桃栽培面積和總產量均居世界首位[1]。桃是典型的呼吸躍變型果實,果實的貨架期較短,不耐貯藏,市場連續供應主要依靠不同成熟期品種的熟期配套進行調節[2]。近幾年國內的主要桃育種單位也先后釋放出了一些中晚熟的黃肉蟠桃新品種,如中蟠102[3]、中蟠13號[4]、中蟠17號[5]和瑞蟠101號[6]等,但是由于桃具有明顯的地域適應性[7],因此培育大果、著色漂亮、硬溶質、耐貯運的中晚熟優質黃肉蟠桃新品種,仍是目前育種工作者的主要育種目標之一。中國農業科學院鄭州果樹研究所經過多年的篩選,獲得成熟期比中桃黃金蜜5號早10 d,能自花結實,產量、外觀、鮮食品質等綜合性狀優良的中晚熟黃肉蟠桃新品種中蟠104。在河南黃桃主產區作為熟期配套新品種的栽培試驗中,綜合表現優秀,呈現出較好的發展前景。

1 選育過程

中國農業科學院鄭州果樹研究所于2012年3月20日,選用筆者單位保存的晚熟黃肉桃優株06-3-137為母本、早熟黃肉蟠桃優株07北5-60為父本進行人工雜交,品種系譜圖如圖1所示。2012年8月從母樹采集的雜交果中取出種胚,經過殺菌劑處理,置于4 ℃冷庫沙藏處理,經過約4個月的沙藏,待種胚開始萌發,播種于營養缽中進行溫室培養,當種苗生長到10~15 cm時移栽到大營養缽中,繼續進行溫室培養。2013年4月下旬將高度約50 cm的雜種幼苗連同根部基質直接移栽到育種圃內,種植的密度為1.0 m × 3.0 m,后期待苗長大后按主干形整形。2015年該雜交組合的雜交苗開始結果,經過對組合的調查,發現單株3-29-11為蟠桃,果形扁平,果頂顯著凹陷,梗洼深、寬,果個大,品質優,極豐產?;樗N薇型,花瓣5枚,粉色,花粉多,自花結實。果較大,大果180 g,肉質較硬,豐產。2015年9月下旬進行高接擴繁,2016年建立了優良株系試驗園,并在河南新鄭、新鄉市橋北鄉和焦作市武陟鄉等地設點進行區試種植。經過多年的觀察,優株3-29-11在河南地區表現為自花結實性強、豐產穩產、品質優、果實商品率高,具有較大發展潛力。2021年將黃肉蟠桃優系3-29-11定名為中蟠104(圖2),2023年12月12日獲河南省林木品種審定委員會林木良種審定證書,良種編號為豫S-SV-PP-003-2023。

2 主要特性

2.1 植物學特征

中蟠104樹體長勢強健,具有較高的萌芽率與成枝率。長果枝、中果枝、短果枝均能結果,復花芽居多。夏季樹體葉片平均長18.10 cm,寬為4.22 cm,葉柄長為0.75 cm?;ㄝ嗑G色至紫紅色,萼片5片;花朵粉紅色,為薔薇型花,5片花瓣;雄蕊花絲為淡粉紅色,花藥為深紫紅色,花粉量大,呈黃色;花柱淡綠色,柱頭黃綠色。

2.2 物候期特征

中蟠104在鄭州地區3月中下旬進入初花期,盛花期在3月下旬(表1),花期持續8~10 d;果實成熟期8月8—12日,果實發育期為137~142 d,不同年份之間有所差異。

2.3 果實性狀

中蟠104成熟時果實扁平,縫合線兩端對稱,果頂顯著凹陷,閉合性良好,果柄長度中等,梗洼淺,縫合線中等深度;平均單果質量241 g,大果質量可達389 g。果皮覆蓋短茸毛,果皮底色為黃色,果面近全紅;果肉黃色,果肉中部沒有花青苷,近核處也沒有花青苷,該品種為硬溶質肉質,耐貯運性比較好;果肉中汁液較多,果肉纖維少且細膩;果實風味甜,可溶性固形物含量(w)15.2%,黏核。果實綜合性狀優良(表1、表2)。

2.4 產量性狀

黃肉蟠桃新品種中蟠104花粉量大,自花結實性好,實際生產過程中需進行疏果和控制產量,從而維持商品果果實大小和樹體長勢。對河南省3個縣市中蟠104新品種示范基地的產量實測表明,進入盛果期后,桃園每666.7 m2產量可達2000 kg(表2)。

3 栽培技術要點

3.1 整形修剪和樹勢調控

中蟠104適用各種樹形,主推兩主枝樹形,株行距2 m ×5 m;也可以采用主干形樹形,推薦株行距1.5 m × 3.0 m。中蟠104幼樹的長勢較旺,應重視夏剪,通過修剪,疏除徒長枝、過密枝,通風透光,緩和樹勢。進入盛果期后,可采用疏枝與短截等方式更新結果枝組。

3.2 肥水管理

該品種豐產性很好,應重視肥水管理。秋施基肥以腐熟的有機肥為主,輔助部分氮磷鉀肥,于9—10月在果園開溝施用;在果實成熟前1個月,每株施2 kg腐熟的餅肥和少量鉀肥。對于降雨量大的地區,桃園應注意排水系統的建設,防止澇害。夏季根據降水情況,適時灌水以保證樹體生長和果實發育,并控制樹體過旺生長。

3.3 疏花疏果

中蟠104成花容易,坐果率高,需要進行嚴格的疏花疏果。疏果通常在落花后40 d、果實達到比拇指稍大時開始,疏除畸形果、病蟲果和并生果,長果枝留果2~3個,中果枝留1~2個,短果枝留1個或不留,盛果期每666.7 m2產量控制在2000 kg為宜。該品種成熟較晚,須進行套袋栽培,可在疏果的同時進行套袋。果實成熟后可以不用去袋,收獲純黃桃果實。也可以采前1周去袋促進上色。

3.4 病蟲害防治

為減少越冬害蟲和病源基數,宜在萌芽前噴施一次石硫合劑。樹體生長期間,注意防治蚜蟲、潛葉蛾、梨小食心蟲、天牛、炭疽病、穿孔病等枝葉病蟲害;果實發育期間,注意橘小食蠅、桃蛀螟、褐腐病等果實的病蟲害防治。應重視夏季修剪,保持樹體通風透光,在有利于果實著色和品質提高的同時,降低病蟲害發生概率。

參考文獻 References:

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SU Mingshen,YE Zhengwen,DU Jihong,ZHOU Huijuan,LI Xiongwei,WU Yuliang,ZHANG Xianan. Breeding report of a new mid-late ripening white peach cultivar ‘Fumi[J]. Journal of Fruit Science,2020,37(8):1256-1259.

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