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四川穗状核桃资源调查与果实品质评价研究

A Study of the Resource Investigation and Fruit Quality Evaluation of Spicate Walnuts in Sichuan

  • 摘要: 为进一步发掘四川核桃的特异种质资源和培育核桃新品种。通过对四川不同地区穗状核桃资源调查与果实品质评价研究,结果表明:(1)四川穗状核桃种质资源分布广泛,收集了阿坝州黑水县、广元市朝天区、南充市顺庆区和蓬安县、成都市新津县等地的资源6份。(2)穗状核桃均表现为结果多、呈串状或穗状,多数为3~8个,4~6个居多,最多可达12个。(3)在生长结果方面,PAXH结果枝、营养枝的生长量最大,HSLH、HSZML和SQLG的顶枝结果率、侧枝果枝率均在50%以上;穗状核桃丰产性较好,HSLH,HSZML和CTYM均为0.40 kg·m-2以上。(4)坚果单果重平均为12.09 g,出仁率平均为53.14%,壳厚平均为0.13 cm;果实外在综合表现为HSZML > HSLH > SQLG > PAXH > XJPX > CTYM。(5)核仁脂肪平均含量为67.47%,HSZML最高,为70.76%;蛋白质平均含量为15.35%,HSLH最高,为17.90%;水分平均含量为2.49%,HSLH最低,为1.08%;在油脂成分中,油酸、亚油酸和亚麻酸差异较大,PAXH油酸含量最高,为32.20%,XJPX亚油酸和亚麻酸最高,分别为64.40%和10.90%;果实内在品质综合表现为HSZML > HSLH > XJPX > CTYM > SQLG > PAXH。因此,通过各项评价指标综合分析,HSZML、HSLH的果实外观与内在品质综合表现最好。

     

    Abstract: In this paper,studies were made of the special germplasm resources of walnuts and breed new varieties of walnuts in Sichuan.According to the resource investigation and fruit quality evaluation of spicate walnuts in different areas of Sichuan,results showed that (1) The germplasm resources of the spicate walnut were widely distributed in Sichuan,and six portions of resources were collected from Heishui County of Aba Prefecture,Chaotian District of Guangyuan City,Shunqing District of Nanchong City and Xinjin county of Chengdu City and other places.(2) Spicate walnuts showed that the results were more string-like or spicate,exhibiting the majority of 3 to 8,4 to 6 mostly,up to 12.(3) In the growth,the growth and largest branch of PAXH,the HSLH,HSZML,SQLG were top branch rates and collateral branch rates were all above 50%; Spicate walnuts had a better,HSLH,HSZML and CTYM were more than 0.40 kg·m-2.(4) The average fruit weight was 12.09 g,kernel rate was 53.14% on an average,the shell thickness was 0.13 cm; the fruit external overall performance displayed HSZML > HSLH > SQLG > PAXH > XJPX > CTYM.(5) The average content of nucleolar fat was 67.47%,the highest HSZML was 70.76%; the average protein content was 15.35%,the highest HSLH was 17.90%; the average moisture content was 2.49%,and the lowest HSLH was 1.08%; In the oil composition,oleic acid,linoleic acid and linolenic acid were quite different,PAXH oleic acid content was the highest,reaching 32.20%,XJPX linoleic acid and linolenic acid were the highest,reaching 64.40% and 10.90% respectively; the comprehensive performance of fruit internal quality was HSZML > HSLH > XJPX > CTYM > SQLG > PAXH.Therefore,through the comprehensive analysis of the evaluation indicators,HSZML,HSLH fruit appearance and internal quality had the best comprehensive performance.

     

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