Wantana Sinsiri, Sinsiri N, Silapanont M, Seedasod S
Department of Agricultural Technology, Faculty of Technology, Mahasarakham University, Mahasarakham 44000, Thailand.
Pak J Biol Sci. 2007 Nov 15;10(22):4069-74. doi: 10.3923/pjbs.2007.4069.4074.
This experiment was conducted at the Experimental Farm, Mahasarakham University, Mahasarakham 44000, Northeast Thailand in the 2006 (August to October) to investigate effect of sowing distances on edible pod yields and yield components of three vegetable cowpea cultivars (Vigna unguiculata L. Walp.) Sesquipedalis subspecies. The experiment was laid in a split plot arranged in a Randomize Complete Block Design with four replications. Five sowing distances were used as main plots (50x10, 50x20, 50x30, 50x40 and 50x50 cm between rows and within rows, respectively) and three cowpea cultivars were used as subplots (MSU 1, KKU 40 and SNU 1). The results showed that there were no statistical differences due to cultivars on total dry weight ha(-1), number of branches plant(-1), marketable pods ha(-1), 100-seed weight and total fresh weight of pods ha(-1) where in most cases genetic potential of the three cultivars were similar. Number of off standard pods was significantly highest with KKU 40 (6.13 pods plant(-1)), whilst MSU 1 and SNU 1 cultivars gave smaller values but both were similar (4.80 and 4.53 pods plant(-1), respectively). The closest sowing distances (T1) gave significantly higher total dry weight ha(-1) and number of off standard pods plant(-1) than other treatments (T2-T5). An increase in sowing distances significantly increased number of branches plant(-1) up to T2 but T2 was similar to other higher sowing distances (T3-T5). Total marketable pods (12,196.50 kg ha(-1)) and total fresh weight of edible pods (12,588.88 kg ha(-1)) were significantly highest with T3 where T3 was the most suitable sowing distances for either of the three cowpea cultivars (50x30 cm between rows and within rows, respectively).
本试验于2006年（8月至10月）在泰国东北部玛哈沙拉堪大学实验农场（玛哈沙拉堪44000）进行，以研究播种距离对三种菜用豇豆品种（豇豆属豇豆亚种）食用荚产量及产量构成因素的影响。试验采用随机区组设计的裂区排列，重复4次。5种播种距离作为主区（行距和株距分别为50×10、50×20、50×30、50×40和50×50厘米），3个豇豆品种作为副区（MSU 1、KKU 40和SNU 1）。结果表明，在总干重公顷（-1）、单株分枝数、公顷可售荚数、百粒重和公顷荚总鲜重方面，品种间无统计学差异，在大多数情况下，这三个品种的遗传潜力相似。不合格荚数在KKU 40品种中显著最高（单株6.13荚），而MSU 1和SNU 1品种的值较小，但两者相似（分别为单株4.80荚和4.53荚）。最密的播种距离（T1）的公顷总干重和单株不合格荚数显著高于其他处理（T2 - T5）。播种距离增加，单株分枝数显著增加，直至T2，但T2与其他较高播种距离（T3 - T5）相似。T3的可售荚总量（12196.50千克/公顷）和食用荚总鲜重（12588.88千克/公顷）显著最高，T3是这三个豇豆品种中任何一个的最合适播种距离（行距和株距分别为50×30厘米）。
