An experiment was conducted during 2017 and 2018 at active field gene bank of ICAR-National Research Centre on Litchi to assess the effect of open cross pollination and self-pollination on fruit set and fruit characteristics in litchi. Nine cultivars of litchi were selected for study and result indicated that fruit set ranged from 17.41 to 68.14 per cent with maximum in ‘Ellaichi’ and minimum in ‘Shahi’. The only three cultivars ‘Ajhauli’, ‘Dehradoon’ and ‘Rose Scented’ carried out fruit (0.28, 0.41 and 2.11%, respectively) at harvest under self-pollination condition while all nine cultivars carried out fruit at harvest ranged from 1.23 to 3.16 with maximum in ‘Rose Scented’ and minimum in ‘Dehradoon’ under open cross pollination. ‘Dehradoon’ had shown 3.23 fold more fruit set at harvest under open cross pollination as compare to self-pollination, similarly ‘Rose Scented’ and ‘Ajhauli’ has shown 2.98 fold and 10.5 fold, respectively more fruit set at harvest compare to self-pollination. The fruit weight was heavier in all three cultivars ‘Dehradoon’ (21.46 g), ‘Rose Scented’ (20.37 g) and ‘Ajhauli’ (18.95 g) in open cross pollination as compare to self-pollinated ‘Dehradoon’ (19.67 g), ‘Rose Scented’ (18.89 g) and ‘Ajhauli’ (17.35 g). The relatively self-incompatible was observed in ’Late Large Red’, ‘Ellaichi’, ‘Dehradoon’, ‘Rose Scented’ whereas severely self-incompatible was found in ‘Shahi’ and ‘Ajhauli’. The completely self-incompatibility was observed in ‘Trikolia’, ‘Dehra Rose’ and ‘Deshi’.

2017年和2018年，在ICAR国家荔枝研究中心的活动田基因库中进行了一项实验，以评估开放式异花授粉和自花授粉对荔枝果实结实和果实特性的影响。选择了9个荔枝品种进行研究，结果表明坐果率在17.41％至68.14％之间，其中“ Ellaichi”最大，而“ Shahi”最小。仅有三个品种“ Ajhauli”，“ Dehradoon”和“ Rose Scented”在自花授粉条件下收获果实（分别为0.28％，0.41％和2.11％），而所有九个品种在收获时的果实均介于1.23至3.16之间。在开放式异花授粉条件下，“玫瑰香气”最高，而“ Dehradoon”最低。与自花授粉相比，“ Dehradoon”显示开放式异花授粉时收获的果实多出3.23倍，同样，“玫瑰花香”和“ Ajhauli”已显示出2.98倍和10.5倍，与自花授粉相比，收获时的坐果率分别更高。与自花授粉的“ Dehradoon”（19.67 g）相比，三个品种的'Dehradoon'（21.46 g），'Rose Scented'（20.37 g）和'Ajhauli'（18.95 g）的果重均较自花授粉的'Dehradoon'（19.67 g）重，“玫瑰花香”（18.89克）和“ Ajhauli”（17.35克）。在“大红色”，“ Ellaichi”，“ Dehradoon”，“玫瑰香”中观察到了相对自我不相容，而在“ Shahi”和“ Ajhauli”中发现了严重的自我不相容。在“ Trikolia”，“ Dehra Rose”和“ Deshi”中观察到了完全的自我不相容性。与自花授粉的“ Dehradoon”（19.67 g）相比，三个品种的'Dehradoon'（21.46 g），'Rose Scented'（20.37 g）和'Ajhauli'（18.95 g）的果重均较自花授粉的'Dehradoon'（19.67 g）重，“玫瑰花香”（18.89克）和“ Ajhauli”（17.35克）。在“大红色”，“ Ellaichi”，“ Dehradoon”，“玫瑰香”中观察到了相对自我不相容，而在“ Shahi”和“ Ajhauli”中发现了严重的自我不相容。在“ Trikolia”，“ Dehra Rose”和“ Deshi”中观察到了完全的自我不相容性。与自花授粉的“ Dehradoon”（19.67 g）相比，三个品种的'Dehradoon'（21.46 g），'Rose Scented'（20.37 g）和'Ajhauli'（18.95 g）的果重均较自花授粉的'Dehradoon'（19.67 g）重，“玫瑰花香”（18.89克）和“ Ajhauli”（17.35克）。在“大红色”，“ Ellaichi”，“ Dehradoon”，“玫瑰香”中观察到了相对自我不相容，而在“ Shahi”和“ Ajhauli”中发现了严重的自我不相容。在“ Trikolia”，“ Dehra Rose”和“ Deshi”中观察到了完全的自我不相容性。出现“玫瑰味”，而在“ Shahi”和“ Ajhauli”中发现了严重的自我不相容。在“ Trikolia”，“ Dehra Rose”和“ Deshi”中观察到了完全的自我不相容性。出现“玫瑰味”，而在“ Shahi”和“ Ajhauli”中发现了严重的自我不相容。在“ Trikolia”，“ Dehra Rose”和“ Deshi”中观察到了完全的自我不相容性。